The homo-logous mitochondrial sequences CTGTCCGAAG and CTGTCCGTCG suggest that species diverge from a common ancestor 660,000 years ago.
What is the mutation rate?The mutation rate indicates the number of nucleotide differences between two homo-logous sequences that emerged in evolution in a given period of time.
In this case, the mutation rate is one nucleotide per 330,000 years and here we have two mutations (CTGTCCGAAG and CTGTCCGTCG), thereby it is expected that the sequences diverged 660,000 years ago.
In conclusion, the homo-logous mitochondrial sequences CTGTCCGAAG and CTGTCCGTCG suggest that species diverge from a common ancestor 660,000 years ago.
Learn more about mutation rate here:
https://brainly.com/question/1587513
#SPJ1
What is the advantage of starting with the 4x objective before moving to the 10x and then the 40x objective?.
The advantage of starting with the 4x objective before moving to the 10x and then the 40x objective is that the lower power objective has a larger field of view and is easier to focus.
What are objective lens of a microscope?An objective lens of a microscope are those lens that are used to focus that sample on a slide and they are always the closest lens to the slides.
The four types of objective lens of a microscope include:
× 4 objective×10 objective×40 objective andoil immersionThe advantage of starting with the 4x objective before moving to the 10x and then the 40x objective is that the lower power objective has a larger field of view and is easier to focus.
Learn more about microscope here:
https://brainly.com/question/13691610
#SPJ9
explain the terms of obligate categories discuss the various intermediate categories.
refer to the taxonomic groups that are consistently utilized in organism hierarchy classification. Sub-phyla, subclasses, suborders, subfamilies, subgenera, and variations are a few examples of .
:It is challenging to classify newly discovered creatures into established categories. As a result, the prefixes "super" and "sub" have been added to the existing categories, such as sub-kingdom, sub-phylum, super class, etc. These are categorized as . This has also made the placement of different taxa more soundly and scientifically.
To learn more about refer : https://brainly.com/question/14196874?msp_srt_exp=4
#
the left brain hemisphere receives sensory input from the _________ and sends motor commands to the _________.
The left brain hemisphere receives sensory input from the right side of the body and sends motor commands to the right side of the body.
What are brain hemispheres?The brain hemispheres are two main parts in which the brain or cerebrum can be divided.
It is well known that the brain hemisphere functions are opposite in direction of functions, i.e. the right hemisphere controls the left and vice versa.
In conclusion, the left brain hemisphere receives sensory input from the right side of the body and sends motor commands to the right side of the body.
Learn more about brain hemispheres here:
https://brainly.com/question/11735724
#SPJ12
The ____ builds an important barrier against pathogens, but it has to absorb ___ efficiently at the same time.
The small intestine builds an important barrier against pathogens, but it has to absorb nutrients efficiently at the same time for optimum function.
What is a pathogen?A pathogen refers to living microorganisms that are capable of causing diseases and harm to their host. Thus, they include the following:
ProtozoaFungiWormsVirusBacteriaBasically, the small intestine has the ability to build an important barrier against pathogens. However, it has to absorb nutrients efficiently at the same time for optimum function of an organism.
Read more on pathogens here: https://brainly.com/question/27961024
#SPJ12
Dihybrid crosses
Black coat color is dominant over white coat color in guinea pigs. in addition to coat color, rough coat is dominant over smooth coat.
a. in a punnett square, demonstrate a cross between a homozygous black/homozygous rough with homozygous white/homozygous smooth. Describe the genotype and phenotype as fractions
Answer:100% black with rough for both phenotype and genotype;4/4,1
Explanation:
so if a black coat and rough coat are dominant and a guinea pig that is a purebred(homozygous)black coat with rough coat and a homozygous white coat with smooth coat breed the dominant allele will show up for both so as a result since the black coat and rough coat are dominant the result will be 100% black with rough coat.
Read the scenarios below. For each of the scenarios, identify the following (you should identify the 3 for EACH of the scenarios):
Control Group Independent Variable Dependent Variable
A. John thinks that a special juice will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're supposed to staple a set of papers). Group A is given the special juice to drink while they work. Group B is not given the special juice. After an hour, John counts how many stacks of papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.
The following were required;
Dependent Variable - productivity of workersIndependent Variable - drinking the special juiceControl group - Group BWhat is a variable?A variable is a measurable quantity that changes in an experiment. The variable that is manipulated in the experiment is called the independent variable.
Now these are the variables that are involved in this experiment:
Dependent Variable - productivity of workersIndependent Variable - drinking the special juiceControl group - Group BLearn more about experiment variable:https://brainly.com/question/16550062?
#SPJ1
Which cellular process do scorpions most likely go through to
produce ATP?
A) anaerobic respiration
B) alcohol fermentation
C) lactic acid fermentation
D) aerobic respiration
Answer:
D) aerobic respiration
Explanation:
chlorophyll a molecules absorb ____ light
chlorophyll is a molecule that absorbs red and blue light
What is the chlorophyll?Chlorophyll is a green pigment located in the mesosomes of cyanobacteria and in chloroplasts of plants used in photosynthesis.
The chlorophyll is known to absorb red and blue wavelengths from the sun.
Therefore, chlorophyll is a molecule that absorbs red and blue light.
Learn more about chlorophyll here:
https://brainly.com/question/13778007
#SPJ11
Which of the following would be made entirely of renewable resources?
OA. A diamond necklace
OB. A wooden basket
OC. A plastic water bottle
OD. A ballpoint pen
When you are hot, blood vessels in the dermis to maintain homeostasis. When you are cold, blood vessels in the dermis to maintain homeostasis. Heat loss from the body will , when blood vessels in the dermis dilate. Heat loss from the body will when blood vessels in the dermis constrict.
Answer:
Blood vessels in the dermis dilate in the hot days or during exercise to cool off the body by sweating. During cold, the same blood vessels will constrict to keep the body warm and reduce the heat loss.
Explanation:
Why is there no output from the photo-electric cell when the RLG is not moved?
There is no output from the photoelectric cell when the RLG isn't moved because the laser beams are 180 degrees out of phase.
What is a photoelectric cell?A photoelectric cell is also known as phototube and it can be defined as an electronic tube (device) that is fitted with a photosensitive cathode, which emits electrons when illuminated, as well as an anode that collects the emitted electrons.
Based on scientific research and experiment, we can logically deduce that there is no output from the photoelectric cell when the ring laser gyro (RLG) isn't moved because the laser beams are 180 degrees out of phase.
Read more on photoelectric cell here: https://brainly.com/question/9512062
#SPJ12
give a well-detailed explanation of the importance of the amniotic sac to the mammalian embryo
Answer:
The amniotic sac and its filling provide a liquid that surrounds
and cushions the fetus . It is a site of exchange of essential
substances, such as oxygen, between the umbilical cord and the
fetus. It allows the fetus to move freely within the walls of the
uterus. Buoyancy is also provided
common plants in murree ??
Answer:
i only know this much just Mark me brailinist
Explanation:
Ajuga bracteosa
Aesculus indica
Adiantum capilus - veneris
Acacia modesta Achyranthis aspera
if an insect eats the lettuce seedlings in your yard, it is acting most like a(n):
If an insect eats the lettuce seedlings in your yard, it is acting like an herbivore.
What is an herbivore?An herbivore is an organism that obtains its energy and nutrients to survive by eating plants.
Herbivores are fundamental in the food web and help to control the number of primary producers in the ecosystem.
In conclusion, If an insect eats the lettuce seedlings in your yard, it is acting like an herbivore.
Learn more about herbivores here:
https://brainly.com/question/1048752
#SPJ12
Select the correct answer from each drop-down menu. genes are segments of dna that determine the phenotype of an individual. pea colors can be yellow or green. when two plants that produce yellow peas were crossed, the offspring produced green peas. this is because the parents were for pea color. because there are only two options for pea color, the plants’ pea color is a case of
The correct answer is as follows.
This is because my parents were heterozygous for the color of the beans. The color of the plant beans is the case of simple Mendelian laws, as there are only two choices for the color of the beans.
What is the meaning of Mendel's laws?Mendel's laws refer to a specific pattern of how a trait is passed from parent to offspring. These common patterns were established by the Austrian monk Gregor Mendel, who conducted thousands of experiments on bean plants in the 19th century.
What is an example of a heterozygous?If the two versions are different, the genotype of the gene is heterozygous. For example, a heterozygous hair color means that there is one red hair allele and one brown hair allele. The relationship between the two alleles affects which trait is expressed.
Click here for more information on beans: https: //brainly.com/question/8098682
# SPJ10
Following a bad fall on the ice, 54-year-old Neal landed on his gluteal region. Subsequently, he has absolutely no feeling in the skin overlying the hamstring muscle group. What nerve do you suspect has been lesioned in the fall
The posterior cutaneous nerve of the thigh.
Loss of sensation to the sole of the foot would result from nerve blockade of the tibial nerve at the medial malleolus.
What is a sensory nerve?A sensory nerve carries sensory information to the nervous system. Sensory information is that which is coming from external stimuli such as pressure and temperature. If a sensory nerve is damaged, the person loses sensation in that region of their body. This explains why the patient cannot feel his fingers.
Thus, this could be the answer.
To learn more about sensory nerve click here:
https://brainly.com/question/7156611
#SPJ1
The scale below shows the pH levels of various liquids. Which of the following substances is a strong acid?
Answer:
Soda
Explanation:
0 is the most acidic and 14 is the most basic /alkaline
which type of study that a student is doing by exploring the external features of an animal
Answer:
ethology
Explanation:
I just looked it up
Which structure is found only in plant cells and
functions in the process of photosynthesis?
a) W
b) X
c) Y
d) Z
Thank you.
Answer:
B) Chloroplast
Explanation:
Chloroplasts are the organelle of photosynthesis. They make and store pigments that give petals and fruit their orange and yellow colours.
I hope this helps and have a good day!
This functional group consists of phosphorous bonded to three oxygens and double-bonded to one oxygen. This functional group consists of phosphorous bonded to three oxygens and double - bonded to one oxygen .
Answer:
Functional groups are groups of atoms that occur within organic molecules and confer specific chemical properties to those molecules. When functional groups are shown, the organic molecule is sometimes denoted as “R.” For example, ethanol is typically drawn like this:
In order to condense the structure and focus on the hydroxyl group (the oxygen and hydrogen bound to the second carbon), everything besides the hydroxyl group would replaced with an R, as follows:
Explanation:
The graph below is an age-structure diagram for a population of African
elephants.
Age-structure Diagram of African Elephants
€
Age class
EDUMA
101234567
4800*
OA Under the age of 20
B. At all ages shown
OC. Over the age of 35
D. Between 20 and 25
B
C
#
At which ages do male elephants outnumber female elephants, according to
the diagram?
The age at which the male elephants outnumber the female elephants, according to the diagram is B and D.
What is an Age-Structured Diagram?This refers to the depiction of data of a range of items that shows the distribution of population through the use of age group and sex.
Hence, we can see that from the complete information, there is a graph that shows the ages of male and female elephants and we can see that in classes of B and D, the males outnumber the females.
Read more about age-structured diagram here:
https://brainly.com/question/13969563
#SPJ1
Which observation helped scientists determine the age of the universe?
A. All stars and galaxies are moving closer together at the same rate.
B. All stars and galaxies are moving away from Earth at the same
rate.
OC. The farther away a star or galaxy is, the more slowly it is moving
away from us.
о D. The farther away a star or galaxy is, the more quickly it is moving
away from us.
What data would meselson and stahl have expected if dna replication was conservative, rather than semiconservative?.
Which type of electromagnetic wave has more energy than a wave of
visible light with the same amplitude?
O x-ray
Microwave
Radio wave
Infrared light
Which two sentences use coordinate adjectives?
A.The dark, musty cellar was full of mice.
B. We rode down a long dirt road on a sunny morning.
C. The dark-haired, hazel-eyed baby was gurgling happily.
D.Alan is wearing a pale blue sweater.
The two sentences which use coordinate adjectives include:
The dark, musty cellar was full of mice.The dark-haired, hazel-eyed baby was gurgling happily.What are Coordinate adjectives?These are words which describe the features of the same noun and is usually separated by a comma.
Options A and C have coordinate adjectives such as 'dark' and the 'dark-haired' respectively.
Read more about Coordinate adjectives here https://brainly.com/question/14242023
#SPJ1
Which describes the smallest basic unit of a substance that still displays the properties of that substance? Which describes the smallest basic unit of a substance that still displays the properties of that substance ?
Answer:
Atoms. An atom is the smallest unit of a pure substance or element that can exist and still retain the properties of the original substance or element.
If the elephants, just because of their size, are the only large animals that can get to the water to drink, the zebras may suffer. This is an example of ______?
A) Competition between habitats
B) Competition between species
C) Breakdown of ecosystems
D) overlap of population
If the elephants, just because of their size, are the only large animals that can get to the water to drink, the zebras may suffer. This is an example of Competition between species.
What is species competition?Competition is an ecological relationship that occurs between organisms of the same or different species. We say that competition is intraspecific when individuals of the same species are involved, and that it is interspecific when dealing with different species.
Interspecific competition is an interaction between two species that causes damage to one or both of them. In general, competition can be for resources such as: space, food or nutrients, light, organic waste, among others.
See more about species competition at brainly.com/question/3890879
#SPJ1
Classify each substance based on the intermolecular forces present in that substance.
The classification of the given substances can be H2O have hydrogen bond, CH4 have Dipole-dipole interaction, CH3Cl has dipole–dipole and dispersion only.
What are intramolecular forces?An intermolecular force (IMF) (or secondary force) is the force that mediates the interaction of molecules, including electromagnetic forces of attraction or repulsion that act between atoms and other types of neighboring particles, such as atoms or ions.
The complete question is:
Classify each substance based on the intermolecular forces present in that substance. Hydrogen bonding, dipole–dipole, and dispersion Dipole–dipole and dispersion only Dispersion only.
H20CH4COCH3ClThe classification of the given substances can be H2O have hydrogen bond, CH4 have Dipole-dipole interaction, CH3Cl has dipole–dipole and dispersion only.
Thus, this can be the possible classification for the given scenario.
For more details regarding intramolecular forces, visit:
https://brainly.com/question/12783802
#SPJ1
Submit your air quality report for your area, showing seven days, the air quality color for each day, and each day's major pollutants. This information should have been obtained in the previous lesson. Also, write a one-paragraph explanation of where the pollutants in your area most likely come from. Part 2 Consider the area that you live in. In at least one paragraph, describe how each of the following factors could affect air pollution in your area. If none of them would affect you, explain why. Factors to consider: the presence of urban areas, topography (presence or absence of hills and mountains), summer temperatures, latitude (distance from the equator).
The amount of ozone and particle concentrations in a given area are influenced by a variety of weather-related factors, therefore the weather can have a significant impact on air quality.
What influences the air's quality?The quality of the air is influenced by a variety of climate-related elements, including temperatures, cloud cover, humidity, precipitation frequency and intensity, wind patterns, and others.
In India, more than 90% of people live in areas where the air quality is below WHO limits. The biggest sources of pollution are factories, coal-fired power plants, and automobiles.
Learn more about the quality of the air here:
brainly.com/question/858294
#SPJ1
What do you observe in the North American Deciduous Forests ?
Answer:
broad-leafed trees that shed their leaves annually
Explanation:
npsgov
