Answer:
Dominant is the regular colored skin or melanin, and the recessive is albinism
For the OCA2 gene, dominant allele is the regular colored skin or melanin, and the recessive is albinism.
What are the functions of OCA2 genes?The OCA2 gene provides instructions for making a protein called the P protein. This protein is located in melanocytes, which are specialized cells that produce a pigment called melanin.
Several common variations in the OCA2 gene reduce the amount of functional P protein that is produced. Less P protein means that less melanin is present in the iris, leading to blue eyes instead of brown in people with a polymorphism in this gene.
OCA2 is the most common type of albinism in African Black OCA patients. The overall prevalence of OCA2 is estimated to be 1:36,000 in the USA, but is about 1:10,000 among African Americans.
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what does a microscope enable people to do
A microscope enables people to magnify things up close that you cannot see with the human eye. Many people have found extraordinary things through the telescope, up to 6,500 times up close (world record microscope). They are used in almost every research center.
Would the light reactions be affected if there were no concentration gradient of protons across the thylakoid membrane?
This is due in exactly 15 minutes! I need help please ASAP!
5. Describe prokaryotic cells. Include general characteristics and indicate the one feature that eukaryotic cells have that the prokaryotic cells do not.
Answer: Prokaryotic cells lack a nucleus and membrane-bound structures. Eukaryotic cells have a nucleus and membrane-bound structures called organelles.
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A geologist uses relative dating methods to guess that a rock is between 1 million and 5 million years old. What is one radioactive isotope the geologist can use to learn the exact age of the rock?
Answer:
Scientists usually use the potassium-argon method to date rocks that are older than about 1 million years. Uranium-238 is also used for radiometric dating. It has a half-life of 4.5 billion years. It decays to produce lead-206.
Potassium-40 is one radioactive isotope the geologist can use to learn the exact age of the rock, by the use of radiometric dating methods.
What is radiometric dating?This is the process through which geologists can easily use to learn the exact age of the rock, it depends upon the natural radioactive decay of some elements such as potassium and carbon.
Geologists generally use the potassium-argon method to date rocks that are aged more than about 1 million years. Uranium-238 is also used for radiometric dating and has a half-life of 4.5 billion years. It decays to produce lead-206.
Radiometric dating is to find the date of the material such as carbon or rocks by labeling the radioactive impurities in a trace amount that is incorporated in it.
Therefore, Potassium-40 is used to know the exact age of the rock.
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The graph below describes the velocity, measured in meters per second (m/s), of an object over a period of time, measured in seconds (s). Velocity over Time A B C D Velocity (m/s) 0 4 4 8 8 12 16 Time (s) Which section of the graph represents negative acceleration?
Answer:C
Explanation:
Answer:
The answer is C
Explanation:
In pea plants the trait for being tall (T) is dominant over the trait for being short (t) and having green peas (G) is dominant to having yellow peas (g).
A heterozygous (for both traits) tall, green pea plant is crossed with a short, yellow pea plant.
Use T/t for height and G/g for color to answer the questions.
Part A
PARENT 1: What is the genotype of the heterozygous tall, heterozygous green parent?
PARENT 2: What is the genotype of the short, yellow parent?
Where do North Carolina's River basins eventually flow into?
Gulf of Mexico and the Atlantic Ocean
Atlantic Ocean and the Great Lakes
O O O O
Gulf of Mexico and the Pacific Ocean
O Pacific Ocean and the Great Lakes
Answer:
Gulf of Mexico and the Atlantic Ocean
Explanation:
In North Carolina, there are total seventeen basins. Five basins are present in western region that drains to the Gulf of Mexico and the other river basins drains to the Atlantic Ocean.
11 of the river basins out of total 17 river basins originates in North Carolina and only four basins flow entirely within the state and rest drains to Gulf of Mexico and the Atlantic Ocean.
Hence, the correct option is "Gulf of Mexico and the Atlantic Ocean".
Instructions: Look at the motion graphs shown below. Match the descriptions here to the coorect graph.
Description a. A car moving at a constant speed stops and then moves in the opposite dorection at the same speed.
Description b. A car moving at a constant speed stops and then moves faster in the same diresction.
Description c. A car moving at a constant speed changes to a higher constant speed
Description d. A car moving at a constant speed changes to a lower constant speed.
Answer:
A-2
B-4
C-1
D-3
Explanation:
In description A, the car is first moving at a constant speed, which means it will have a constant slope. Then, it stops, which causes a slope of 0. Finally, it moves in the opposite direction, which will cause a negative slope. The second graph has a positive, zero, and negative slope; therefore, it fits A.
Description B has a constant slope, a zero slope, and a higher slope. Graph 4 goes up normally, then stops, and finally goes steeper. This fits description B.
Description C has a constant and then a higher slope. Graph 1, increases steadily and then sharply increases; which fits C.
Description D has a constant and then a lower slope. Graph 3 increases fast but then flattens, which matches the slopes in the description.
What is a solar eclipse
Answer: A solar eclipse is a portion of the earth that is engulfed in a shadow by a moon and sun interaction.
Explanation:
which of the following genotypes ratios can be expected?
Answer:
You could expect to have a 90% heterozygous (Dd) and 10% (dd)
Explanation:
make a square chart and put either of the parents of either side, (top and left side then do you chart :)
The function of an enzyme depends on its ......
HELP
Answer:
It depends on its Three Dimensional shape
what is an important effect of mars low temperature and low air pressure
Standing on the ground and looking up, you are looking through the atmosphere. It might not look like anything is there, especially if there are no clouds in the sky. But what you don’t see is air – lots of it. We live at the bottom of the atmosphere, and the weight of all the air above us is called air pressure. Above every square inch on the surface of the Earth is 14.7 pounds of air. That means air exerts 14.7 pounds per square inch (psi) of pressure at Earth’s surface. High in the atmosphere, air pressure decreases. With fewer air molecules above, there is less pressure from the weight of the air above.
Pressure varies from day to day at the Earth’s surface - the bottom of the atmosphere. This is, in part, because the Earth is not equally heated by the Sun. Areas where the air is warmed often have lower pressure because the warm air rises. These areas are called low pressure systems. Places where the air pressure is high, are called high pressure systems.
A low pressure system has lower pressure at its center than the areas around it. Winds blow towards the low pressure, and the air rises in the atmosphere where they meet. As the air rises, the water vapor within it condenses, forming clouds and often precipitation. Because of Earth’s spin and the Coriolis Effect, winds of a low pressure system swirl counterclockwise north of the equator and clockwise south of the equator. This is called cyclonic flow. On weather maps, a low pressure system is labeled with red L.
A high pressure system has higher pressure at its center than the areas around it. Winds blow away from high pressure. Swirling in the opposite direction from a low pressure system, the winds of a high pressure system rotate clockwise north of the equator and counterclockwise south of the equator. This is called anticyclonic flow. Air from higher in the atmosphere sinks down to fill the space left as air is blown outward. On a weather map, you may notice a blue H, denoting the location of a high pressure system.
How do we know what the pressure is? How do we know how it changes over time? Today, electronic sensors in weather stations measure air pressure. These sensors are able to make continuous measurements of pressure over time. In the past, barometers were used and measured how much air pushed on a fluid, such as mercury. Historically, measurements of air pressure were described as “inches of mercury.” Today, meteorologists use millibars to describe air pressure.
Air pressure depends on temperature and density.
When you inflate a balloon, the air molecules inside the balloon get packed more closely together than air molecules outside the balloon. This means the density of air is high inside the balloon. When the density of air is high, the air pressure is high. The pressure of the air pushes on the balloon from the inside, causing it to inflate. If you heat the balloon, the air pressure gets even higher.
Answer:
not sure
gfghyn fesdf
Explanation:
Match the statements.
Answer:
PHOTOSYNTHESIS:
- Light energy is absorbed
- Glucose and oxygen are products
- Carbon dioxide and water are inputs
- Chemical energy is produced
CELLULAR RESPIRATION:
- Carbon dioxide and water are outputs
- Chemical energy is released
- Glucose and oxygen are inputs
- ATP, motion and heat energy are produced
Explanation:
- Photosynthesis is process by which autotrophic organisms synthesize their food (glucose) in the presence of sunlight. The process combines carbon dioxide (CO2) and water (H20) to produce glucose (C6H12O6) and oxygen (O2), by the energy derived from absorbing light. In the process, light energy is transformed to chemical energy (glucose). The reaction is as follows:
6CO2 + 6H2O → C6H12O6 + 6O2
- Cellular respiration is the opposite of photosynthesis as it involves the metabolic breakdown of glucose molecule to produce energy usable by the cell (ATP). Cellular respiration combines glucose and oxygen (inputs) to yield carbon dioxide and water (outputs). ATP, motion and heat energy are produced in the process. The equation is as follows:
C6H12O6 + 6O2 → 6CO2 + 6H2O
Which category of gymnosperm is thought to have given rise to flower-bearing plants?
Select one:
a.
Cycadophyta
b.
ginkgophyta
c.
Coniferophyta
d.
gnetophyta
Answer:
d. Gnetophyta
Explanation:
Gymnosperms represent a group of "naked seed" plants which includes, among others, Cycads, Conifers and Gnetophytes. It has been proposed that Angiosperms or flowering plants, probably evolved from Gnetophyta about 150 million years ago. Gnetophyte is a group of Gymnosperms composed of only three living genera: Ephedra, Welwitschia and Gnetum. In Gnetum and Ephedra plants, researchers documented a regular process of double fertilization, which is a distinctive feature of Angiosperms. This important observation has been used to propose that Angiosperms evolved from Gnetophyta.
Answer:
Gnetophyta
Explanation:
Indicate the relative ages of the fossilized organisms listed below by
placing them in a strata on the diagram of a cross section of sedimentary rock below
Answer:
a-youngest fossils
b-mammal fossils
c-first dinosaurs
d-first land plants
e-trilobites
f-oldest fossils
a-youngest fossils
b-mammal fossils
c-first dinosaurs
d-first land plants
e-trilobites
f-oldest fossils
What is fossils?Fossils generally helps in relative dating of rocks. The Trilobites are considered the oldest in this rock sequence when we apply the principle of superposition of strata. The principle states that "in an undeformed/undisturbed sequence of rock, the oldest is always at the bottom while the youngest is on top". This principle therefore explains why the Trilobites at the base are considered the oldest.
How is the layer of iridium used to tell the relative age of different rock strata and fossils" it can be said that rock strata and fossils can have there ages detected by following the layer of irudium over the newer ones recently dropped.
It is important to note that iridium is an element that has had its deep root on earth for the longest of times Because of this unending deposition of iridium all over the earth. There is a particle of iridium on most rock strata and fossils allover the earth. Now rock strata and fossils can have there ages detected by following the layer of irudium over the newer ones recently dropped.
Therefore, a-youngest fossils
b-mammal fossils
c-first dinosaurs
d-first land plants
e-trilobites
f-oldest fossils
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Which science involves studying our planets and its resources
Answer:
Earth science.
Explanation:
Fun fact: There is 5 branches of Earth science.
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please please help i will give brainalist and extra points
Answer:
I'm pretty sure the answers for this is D, C, and B.
Match the description with the correct and corresponding vocabulary term.
Question 64 options:
Erosion
Plate tectonics
Earthquake
Subduction
Weathering
Volcano
Continental drift
1.
This is the movement of soil, mud and rock due to the downward movement of wind, water or ice.
2.
This is a landform that is formed by the eruption of magma through a vent from the interior of the Earth.
3.
This is a geologic even that occurs when tectonic plates are displaced violently.
4.
This is the geologic theory where the cooler surface of the Earth move slowly over the hotter layer underneath.
5.
This is the movement of Earth's continents, relative to each other, due to plate tectonics. Wegener stated that Earth's continents were once joined in a supercontinent, Pangaea, and broke apart about 200 million years ago and slowly moved to the present locations.
Image preview
6.
This is the breaking down of rocks, soils, and minerals through direct contact with the Earth's atmosphere.
7.
This is an area where two tectonic plates move towards one another, with one plate sliding underneath the other plate.
Answer:
Weathering = 6
Volcano = 2
Plate tectonics = 4
Subduction = 7
Continental drift = 5
Erosion = 3
Earthquake = 1
Match the following DNA strand to its complementary strand of RNA
TTC - CCA - GAT - TTT
Question options:
AAG - GSU - CUA - AAA
UUG - GGT - CUA - AAA
AAG - GGU - CUA - UUU
ATG - CCG - AAT - TCG
Answer:
AAG GGU CUA AAA
it's U because RNA contain Uracil instead of Thymine
Answer:
AAG - GGU - CUA - AAA
Explanation:
This happens because in the RNA synthesis, Thymine is present in Uracil giving it a U symbol. The conversions between the bases go between Cytosine and Guanine, or Thymine (Uracil) and Adenine. Whenever you switch to the other strand, it becomes the opposite base for the other strand so they fit together perfectly in the chromosome or chromatid. Example: C - G contain opposite characteristics that fit so they only go together, Adenine or Guanine will not ever be present with either of those bases.
1. Which of the following is NOT a reason to consider when selecting the location of
your business?
A. Size of the building
B. Proximity to major businesses who use flower shops
C. Convenience to the employees
D. Location suitable to drive-by and walking traffic
Answer:
Option B is the answer, that is, proximity to major businesses who use flower shops.
Answer:
B
Explanation:
All other options are factors contributing to the progress of the business whereas the proximity of flower shops should not be of concern in such a situation.
An erratic is a large boulder deposited by
(1 Point)
ICE
O Water
O Wind
Gravity
What does convection in water cause?
Answer:
Convection plays an important role in heat transfer inside this pot of water.
Explanation: i hope this is right
Answer:
Convection streams cause the impacts that can be seen in a skillet of water warming on a stove. The water at the foot of the container, closest to the burner, warms quickly and rises to the surface. Bubbles illustrate the disturbance of warmed water atoms, which circulate the warm until all the water is bubbling.
Explanation:
Have A Wonderful Day !!
what is a structure and behavior of an American toad
or adaptations of american toad
toad ∨
If a second cross is made using these offspring and results are ¾ short haired while ¼ are long haired can you now determine the exact genotypes of the parents and if so what are they?
Complete question:
In guinea pigs, the allele for short hair is dominant. All the guinea pigs are born short-haired. If a second cross is made using these offspring and results are 3⁄4 short-haired while 1⁄4 are long-haired can you now determine the exact genotypes of the parents and if so what are they?
Answer:
The exact genotype of both the F2 parents is Ss, heterozygous for the trait hair length.
Explanation:
Due to technical problems, you will find the complete answer and explanation in the attached files
mutations within the dna sequence of an organism can
Answer:
A lot
Explanation:
Many mutations are non harmful, but rarely some can be harmful.
why is crossing-over important?
Answer:
Crossing over is essential for the normal segregation of chromosomes during meiosis. Crossing over also accounts for genetic variation, because due to the swapping of genetic material during crossing over
Explanation:
Answer: Crossing over is very important.
Explanation:
When crossovers acour in genectics they add more verietty to the next generations.
Please help fill in the blank with each letter of the definition i need help
Answer:
frequency✧C
wavelength✧A
wave speed✧D
wave period✧E
amplitude✧B
i'm not sure if they are all correct so sorry ✧
what is this answer??
Answer:
50%
Explanation:
Question is in the image below.
Answer:
It's the last one
Explanation:
The grand canyon was formed by erosion of water. That is the only option with erosion of water for the grand canyon
Answer:
the fourth one.
Explanation:
grand canyon was carved out by ancient rivers which erodes the softer rock of the area, all of the Hawaiian islands are volcanic formations.
How did the moon fom?
Answer:
It was formed around 4.5 billion years ago when something the size of mars smashed into the Earth, which made matter fly into orbit.
