what is backcross in genetics​

Answers

Answer 1
Backcross, the mating of a hybrid organism, offspring of genetically unlike parents,with one of its parents or with an organism genetically similar to the parent.

Related Questions

Which key feature of living organisms is best described as the transmission of DNA from parent to offspring?

Answers

Answer:

But what were the key scientific discoveries that helped establish these principles? As it turns out, the connections between genes, chromosomes, DNA, and heredity were ... each parent contributed a form of element to the resulting offspring. ... The most remarkable feature of both Mendel's and Darwin's proposals is that ...

Explanation:

Inheritance is the key feature of the living organisms which can be best described as the transmission of DNA from parent to offspring. Thus, the correct option is C.

What is Inheritance?

Inheritance is the process through which the genetic information is passed on from the parent generation to the child. This is why, the members of the same family tend to have similar kind of characteristics.

Genetic information is the DNA or chromosomes which is transferred from the parents to offspring through fertilization of gametes. Gametes are the haploid cells which contain genetic information from both the parents which combine to form an offspring with characteristics similar to both the parents.

Therefore, the correct option is C.

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Which gas in Earth's atmosphere forms ozone?
oxygen
O nitrogen
water vapor
O carbon dioxide

Answers

Answer:

Hey There!

Your answer will be OXYGEN!

Explanation:

Ozone is a layer of gas in our atmosphere which protects us from those harmful UV (ultraviolet) Radiation from the Sun...

It's basically OXYGEN but it had been converted into a different form!

OZONE ([tex]O_{3}[/tex]) AKA TRIOXYGEN...

I HOPE THIS HELPED WITH YOUR WORK!

:D

Answer: The answer is: oxygen

Explanation: I have my ways ;>


The LLQ is located
___ to the LUQ.

anterior
posterior
Superior
Distal
Inferior

Answers

The anatomical terms are used to define the anatomical positions. The LLQ (Left lower quadrant) is located inferior to the LUQ (left upper quadrant). Thus, option e is correct.

What are anatomical terms?

Anatomical terms are used to define the exact position and location of the organs and the structures of the body in reference to each other. They are the directional terms that provide the details of the direction an organ is situated at.

The directional anatomical terms include superior, inferior, posterior, anterior, distal, proximal, caudal, occipital, peripheral, central, etc. The LLQ (Left lower quadrant) is the abdominal section that is located below the LUQ (left upper quadrant).

The anatomical term inferior is used to show the structure that lies below the reference organ. On the other hand, the superior shows above, the posterior shows behind, the anterior shows the front area, and the distal shows structures located further away from the origin.

Therefore, option e. the left lower quadrant is inferior to the left upper quadrant.

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Help please don’t ignore I’ll mark you as brainliest , name the following organelles

Answers

Answer:

9. ribosomes

10. lysosomes

11. endoplasmic reticulum

12. centrioles

What role do white blood cells preform in a human body?

A. Clotting blood
B. Conducting electrical impulses
C. Secreting enzymes
D. Carrying oxygen

Answers

Answer:

it defends the body for dieses

Explanation:

White blood cell, also called leukocyte or white corpuscle, a cellular component of the blood that lacks hemoglobin, has a nucleus, is capable of motility, and defends the body against infection and disease by ingesting foreign materials and cellular debris

Answer:

A. protect against pathogens

Explanation:

white blood cells protect you from disease and illnesses

a pathogen is a bacterium, virus, or other microorganism that can cause disease. have a good day :D

Part 3: Capillary Action.
Submit the data you recorded in the space below.
WRITER

Answers

Answer: (This only works with the Detergent, Water, and Penny experiment on Odyssey-ware)

I observed that after I used the detergent in my experiment, the average droplets I was able to get on the penny decreased drastically. My results seemed to be better before when I was just using the water. This is an example of Capillary action.

What should you do if you break glass in the classroom?
Nothing
Hide it
Tell the teacher immediately
Clean it up and put the glass in the broken glass box.


Is:Tell the teacher immediately

Answers

Answer:

tell the teacher immediately

In your opinion, why is it important to be knowledgeable about technology in your future career in the healthcare field?

Answers

Answer:

Explanation:

Porque a tecnologia está evoluindo junto a medicina com isso será possível operar pacientes, localizar tumores e fazer exames.

because you will find cures for unknown diseases and it will help us as humans a lot.

5. Which 3 structures have 2 membranes? (1pt)
a. Endoplasmic reticulum, nucleus, mitochondria
b. Chloroplast, golgi apparatus, mitochondria
C. Vacuole, nucleus, ribosomes
d. Nucleus, mitochondria, chloroplast

Answers

Answer:

d. Nucleus, mitochondria, chloroplast

List at least four characteristics of bases.

Answers

Answer:

1. Slimy or soapy feel

2. Bitter taste

3. Bases turn red litmus paper blue

4. Bases are substances that contain metal oxides or hydroxides

Explanation:

Answer:

1. Slimy or soapy feel

2. Bitter taste

3. Bases turn red litmus paper blue

4. Bases are substances that contain metal oxides or hydroxides

Explanation:

Sickle cell anemia is a recessive trait in humans. In a cross between two parents who are heterozygous.a. Trueb. False

Answers

Answer:

True

Explanation:

This is because in the two hetero zygote parents the SS traits are dominated by the dominant A geneotype. Therefore in the AS parents the S-genotype could not manifest, and therefore recessive.

However,when the two recessive genes are crossed in the parents at meiosis 1,the recessive genes were randomly selected to give the SS genotype to the parents.This is an example of autosomal recessive pattern. The chances of inheritance of the gene  for the two parents is 25% based on Mendelian's patterns

it is an inherited disorder in which the  the percentage of normal biconcave shape Hb is low in the blood, but more of sicked shape ,therefore given the blood of the individual sickle shaped RBCs. It is due to genetic mutation due to  single nucleotide substitution of amino acid  Glumatic acid with Valine.

The reduction of the surface area for the transport of oxygen,leads to the deficient oxygen supplies to the tissues,and clogging of blood vessels by sickle rbc leading to pains

Trace a drop of blood from the heart to the top of the foot by naming the blood vessels from aorta to the artery that can be felt on the foot (dorsal is pedis).

Answers

Answer:

Oxygenated blood leaves the heart and travels down the large thoracic aorta before the  Dorsalis pedis: This artery supplies blood to the surface of the foot as a continuation of These veins can usually be seen through the skin. Medial dorsal cutaneous nerve, sural nerve, and deep fibular nerve in the lower extremities.

Explanation:

an organism with one set of chromosome is called ​

Answers

Answer: A haploid

Explanation: Mark brainliest plz

If an enzyme has specific pH requirement, it will have a ____ slope. In contrast, an enzyme that can function in a range of pH values will a ____ apex.​

Answers

Answer:

no ideal

Explanation:

please let me know the answer

Most animals produce offspring through mating, but some organisms reproduce by cloning. What is cloning?
o The energy requirement of two different parents
o The growth and development of bacteria
o The process of producing an organism that is genetically identical to the organism from which it was produced.
o The process that allows an organism to maintain a stable internal environment changing external conditions.
Please help!!!

Answers

The correct answer is the third option! the third option is the literal definition of cloning

Answer:

The answer is C.

Explanation:

The basic unit of matter. The simplest form of an element.

Answers

Answer:

Atom

Explanation:

How many oxygen molecules can one hemoglobin molecule transport?

Answers

Answer:

four oxygen molecules

Explanation:

The hemoglobin molecule has four binding sites for oxygen molecules: the iron atoms in the four heme groups. Thus, each Hb tetramer can bind four oxygen molecules.

Trace the movement of blood through the human body in the circulatory system. List the different vessels and organs involved.

Answers

Answer: Blood flows through your heart and lungs in four steps: The right atrium receives oxygen-poor blood from the body and pumps it to the right ventricle through the tricuspid valve. The right ventricle pumps the oxygen-poor blood to the lungs through the pulmonary valve.

Explanation:

what is a relative risk?​

Answers

Answer:

A measure of the risk of a certain event happening in one group compared to the risk of the same event happening in another group.

Mass 112.5g/ Volume ? = Density 75 g/cm3 *

Answers

Answer:

The volume is 8,437.5 cubic centimeters.

Explain one way a mutation can be beneficial to a bacterial cell.

Answers

Answer: They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur. They increase an organism's changes of surviving or reproducing, so they are likely to become more common over time

Explanation:

Bacteria can be beneficial to evolution.

"Beneficial mutations are essential for evolution to occur. They increase an organism's changes of surviving or reproducing, so they are likely to become more common over time."

From google! I hope this helps and DM me with any other questions!

besides water lights and a few nutrients what do algae need in order to grow​

Answers

Answer:

Hey There!

Apart from a few nutrients, Algae need...

CARBON DIOXIDEAn alternative form of energy when the Sun isn't shining (Night) ie SUGARA suitable environment TEMPERATURE of between 20 and 30 degrees Celsius

Explanation:

I HOPE THIS HELPS WITH YOUR WORK!

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Why are stromatolites not considered the earliest form of life?

Answers

Explanation:

number number 539 34 is divisible by which of the following numbers

A recessive allele inherited in a Mendelian manner causes the disease cystic fibrosis. A phenotypically normal man whose father had cystic fibrosis, and a mother who comes from a long line of non-affected people, marries a phenotypically normal woman from outside the family. If the frequency in the general population of heterozygotes for cystic fibrosis is 1 in 25, what is the chance that the couple's first child will have cysitc fibrosis

Answers

Answer:

The chance that the couple's first child will have cystic fibrosis = 1/100

Explanation:

Since both parents are phenotypically normal, it means that they are both heterozygous for cystic fibrosis.

The probability of a cross of two heterezygotes for a recessive allele to produce an offspring having two recessive alleles is 1 : 4 in accordance with Mendelian inheritance.

The initial probability of the couple's first child to be have two allelic pairs for cystic fibrosis = 1 : 4.

However, the frequency in the general population of heterozygotes for cystic fibrosis is 1 in 25.

Therefore, the chance that the couple's first child will have cystic fibrosis = 1/4 * 1/25 = 1/100

Fibers used in textiles can be either natural or synthetic. Cotton and Linen are different variants of cellulose fibers. Wool is natural polyamide (protein) fiber. Nylon and polyester are variants used in synthetic fibers. There are 35 kinds of amino acids used in making proteins, and most proteins have 50-1000 amino acids in the chain. What does this say about the number of different kinds of proteins available in nature

Answers

Answer:

Proteins are very varied, and the number of junctions and the arrangement in which these junctions are found depends on this.

In addition to taking into account the amount of amino acids.

Explanation:

Proteins in nature are found in great variety, this is due not only to the amount of amino acids present, but the multiple combination options between these amino acids, we must not ignore the unions, that is why some proteins are more complex what others.

Proteins have different unions and this makes it have different coformations, there are primary, secondary, tertiary and quaternary unions, if the protein has all these unions it is considered complex, whereas if it has the simplest it is considered a simple protein.

Human egg and sperm are similar in that ________.a. they have the same degree of motilityb. they have the same number of chromosomesc. about the same number of each is produced per monthd. they are about the same size

Answers

Option b) It is because they have the same number of chromosomes.

imagine you have data on the jaw structure of hundreds of species, and information about what each species ate. How could you use this information to figure out what the new species eats.

Answers

Answer:

shoot a irish spring green like flight

Explanation:Imagine you have data on the jaw structure of hundreds of species, and information about what each species ate. How could you use this information to figure out what the new species eats?

Answer:

i don't think you can if evolution is a thing but if it  is then you might be able to find what they eat

Explanation:it is right

why does water have partial negative and positive charges?

Answers

Explanation:

Water is H20 which is 2 hydrogen atoms plus a oxygen atom

Oxygen (O²¯) is a anion, meaning it has a negative 2 charge (two extra electrons)

Hydrogen (H+) is a cation, it has one less electron in its atom

In water theres 2 H+ ions (2+ charge in total ) and 1 O²¯ ions (2- charge) , making the charges balance out and become neutral

Even though H20 is a neutral charged molecule, oxygen has higher electronegativity than hydrogen, making hydrogen comparatively positive to its oxygen atom

Use the image to answer the question.

An image at left labeled aluminum atom has a mix of red and blue balls in its center and 3 concentric black rings around the center. The inner ring has 2 small green balls on it. The middle ring has 6 small green balls on it. The outer ring has 3 small green balls on it. A blue arrow leads to an image at right labeled aluminum ion with a mix of red and blue balls in its center. 2 concentric black rings around the center. The inner ring has 2 small green balls on it. The middle ring has 6 small green balls on it.

What is the name of the aluminum ion?

Al–1
Al+2
Al–3
Al+3

Answers

Answer:

Al+3

Explanation:

Question:

Use the image to answer the question.

An image at left labeled aluminum atom has a mix of red and blue balls in its center and 3 concentric black rings around the center. The inner ring has 2 small green balls on it. The middle ring has 6 small green balls on it. The outer ring has 3 small green balls on it. A blue arrow leads to an image at right labeled aluminum ion with a mix of red and blue balls in its center. 2 concentric black rings around the center. The inner ring has 2 small green balls on it. The middle ring has 6 small green balls on it.

What is the name of the aluminum ion?

Al–1

Al+2

Al–3

Al+3

Answer:

Al+3

Explanation:

Credits to google :)

Which is not a characteristic of life

Answers

Explanation:

air air air air air air air air

Other Questions
Last night, the temperature fell from 0F to Negative 13 and one-fifthF in4 and two-fifths hours. Alan calculated the average temperature change per hour. Negative 13 and one-fifth divided by 4 and two-fifths = Negative StartFraction 66 over 5 EndFraction divided by StartFraction 22 over 5 EndFraction = Negative StartFraction 66 over 5 EndFraction (StartFraction 22 over 5 EndFraction) = Negative StartFraction 1,452 over 25 EndFraction Alan solved the problem, but when he checked the answer by estimating, it didnt seem right. What error did he make? 2. The reference to "the Fourth Amendment to the US Constitution" in paragraph 1 primarily servesto *(4 Points)O challenge the constitutionality of eminent demainO provide constitutional support for eminent domainO compare American law to the laws of other countriesrespond directly to a criticism of the author's opinion Escoge.Preparo una sopa de legumbres. Tengo quecada dos minutos mientras est en el fuego.cocinarlafrerlarevolverlaaadirla Please help me with this question what is traditional democratic theory? and what are the realities? Which of the following is NOT a unit of measurement in the metric system? 1.meter 2.second 3.centimeter 4.foot 5 important reactions that are important for metabolism I need a refresh on how to do these type of problems, can you help me ? 4 (2x+8) Which equation has a constant of proportionality equal to 3? PLS HELP 20x 3 the 3 is near the ten just couldn't find anything to fit it 10 You are on an alien planet where the names for substances and the units of measures are very unfamiliar. Nonetheless, you obtain 40 quibs of a substance called skvarnick. You can trade this skvarnick for gold coins, but the vendors all measure skvarnick in units of sleps; not quibs. 15 quibs is equal to 13 sleps. If you have 40 quibs of skvarnick, how many sleps do you have? Round your answer to the nearest tenth (one decimal place). Type only the number; not the number and unit. Your Answer: Which type of worker would most likely be able to begin work after receiving a high school degree and completing an on-the-job apprenticeship? a miner a forester a conservationist a park worker Help me I need help with this factorization of 630? Is an apple seed a compound? Please explain how to do this and show work 231241.1425474154154314+9+454+4+94++4+45654+456++65455+44+4++44+55+45+4++4+54+4+5+54+54+5448+6+54+65448+544+554++844+54+5+6543+54+84+54+54+84+54+5454+54++4540. Energy in Foods Use the chart at the right you help you answer the following question. Suppose you were getting ready for a soccer game and wanted to have a snack that would give you energy for the entire game. Which snack should you eat: a container of yogurt with some cheese (both high in fat) or hard candy with soda pop (both high in glucose)? Why? Multiple ChoiceHow many titles does the Patriot Act have?O twelveO tenO fiveO three A 55.0 g piece of iron at 505 C is put into 735 grams of water at 15.0 C. What is the final temperature of the water and the iron? l need help dividing