What leads to variation in a population?​

Answers

Answer 1

Answer:

Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

Explanation:


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How do living organisms maintain homeostasis within their bodies?

Answers

Answer:

The body regulates those levels in an example of homeostasis. When levels decrease, the parathyroid releases hormones. If calcium levels become too high, the thyroid helps out by fixing calcium in the bones and lowering blood calcium levels. The nervous system helps keep homeostasis in breathing patterns.

Explanation:

Hope this helps :)) Please mark brainliest :))

Answer:

Look below.

Explanation:

They maintain homeostasis by regulating temp, glucose, toxins, blood pressure, and pH.

Please help me I beg you please help

Answers

Answer:

A-T

T-A

T-A

C-G

A-T

G-C

G-C

C-G

T-A

A-T

Answer:

ATTCAGGCTA= TAAGTCCGAT

Explanation:

adenine pairs with thymine with 2 hydrogen bond in DNA and cytosine pairs with Guanine with 3 hydrogen bonds .

PLEASE HELP IM DOING A TEST RN!!
Which of the following describes how the pollen must travel in order for pollination to occur?

Question 18 options:

. from the stigma to the anther


from an anther to the style


from an anther to the stigma


from the stigma to the pollen tube

Answers

Answer:

from an anther to the stigma

Explanation:

Answer:

Anther to stigma!

The anther is where the pollen is granulated, and the stigma is the part where they reproduce.

In rabbits, straight ears (E) are dominant to floppy ears (e). Two rabbits are crossed, and 50% of their offspring have floppy ears. Which cross represents the genotypes of the parents?

Answers

Ee and ee because when you do the punnet square you get 50% Ee which are straight ears and 50% ee which are floppy ears.

How do environmental issues impact food production?

Answers

Answer:

hola esta en ingles alguien sabe como ponerlo em español

Explain how form and function are related in human cells. Include examples.

Answers

Answer:

Many human cells are specialized in form and function because each cell in the body carries out life processes that help the human body to survive. For example, nerve cells have long projections that help to carry electrical messages to other cells.

What is the universe made of

Answers

Answer:

composition

Explanation:

the universe is composed almost completely of dark energy, dark matter , and ordinary matter

Answer: matter , atoms

Explanation:

inherited traits are governed controlled by

Answers

Answer:

Inherited traits are controlled by genes. In this case, genetic material.
Inherited traits are controlled by genes and the complete set of genes within an organism's genome is called its genotype.

Genetic material.

HELP! I NEED THE ANSWER TO THIS QUESTION AS FAST AS POSSIBLE.
Which of the following is a source of genetic variation in sexually-reproducing organisms?
A.
meiosis
B.
mitosis
C.
translation
D.
all of these

Answers

it is A. meiosis im pretty sure :)

PLZ HELP! WILL MARK YOU BRAINLIEST!

Which of the following are associated with the integumentary system?
a. helps support the body
b. encloses internal body structures
c. site of many sensory receptors
d. melanin production

Answers

Answer:

melanin production

Explanation:

it occurs in the hair or skin

D

The integumentary system consists of the skin, hair, nails, glands, and nerves.

Which of the following answers is NOT correct with regard to convection currents?

A. Convection currents in magma drive plate tectonics.

B.Convection currents in magma are a result of density differences.

C. Convection currents play a role in the movement of Earth’s inner core.

D. Convection currents in magma are caused by temperature differences.

Answers

Answer: C....Convection currents play a role in the movement of Earth’s inner core

The statement which is not correct with regard to convection currents is as follows:

Convection currents play a role in the movement of Earth’s inner core.

Thus, the correct option for this question is C.

What is Convection current?

Convection current may be defined as a procedure that significantly involves the movement of energy from one place to another. It is basically the existence of current in a fluid through convection.

The inner core of the earth has appeared as solid as compared to other parts like the crust and mantle. Most liquid particles are definitely found on the mantle of the earth's surface.

Due to the presence of excessive liquid particles and compounds, the convection current is significantly noticed there.

Apart from this, magma is also a fluid that derives current through convection. It produces in a number of ways like magma driving plate tectonics, density differences in the magma, and temperature differences.

Convection currents are basically the movement of fluid with respect to temperature or density difference within the material.

Therefore, the correct option for this question is C.

To learn more about Convection currents, refer to the link:

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‼️‼️‼️‼️‼️
which population is most likely to increase as a result?
A. deer
B. mouse
C. owl
D. Hawk

Answers

Answer:

A. Deer

Explanation:

cause only mountain lions eat deers. without them theyll increase.

I think it would be d , hawks

An area of land that is not used by humans for agriculture, industry, or habitation is called __________.
A)
wilderness
B)
rangeland
C)
public land
D)
sustainable forest
E)
private land

Answers

Explanation:

range land....,....,,...................

The answer to this question is rangeland

The upwelling of deep ocean currents in some areas results in _________________.

Group of answer choices

A. nutrient-rich water

B. rough seas

C. a decrease in marine life

D. flooding on the coasts

Answers

Answer:

a

Explanation:

i took this

1. What does H.I.P.P.O. stand for? Habitat destruction, Invasive species, pollution, population Increase and
over population
over production
over use
over exploitation

Answers

Human,increase population and Overharvesting

Can you please help me?!❤️

Answers

Answer:

A. Strainer

Explanation:

A strainer is, amongst other things, something used to wash foods like fruits, vegetables, &tc and rinse out certain foods, like rice.

What happens when you put something through a strainer? When you wash something with it, the dirt goes through but not the food, like in the image, right?

Have a great day!

TEST - chapter 8
32 of 32
POSSIBLE POINTS: 3
What are the three factors that affect the rate of photosynthesis? (Hint: These are clearly listed toward
the end of your notes).

Answers

Answer:

light intensity, carbon dioxide concentration and temperature

though water is a big one too but would be 4th on the list imo

CO2 is an interesting one as it's amounts go down precipitately over say a corn field or other mass of photosynthesizing organisms during the day and increases at night when photosynthesis stops

Explanation:

Sloths spend most of their time living in trees. They are considered __________ animals.
A)
folivorous
B)
epiphytic
C)
zoning
D)
arboreal
E)
browsing

Answers

The answer is D) arboreal
I believe the correct answer is D. Arboreal

the epicenter of an earthquake is:

A. along a fault
B. the same as the focus
C. directly above the focus
D. directly below the focus

Answers

Answer:

I'm positive its C :)

Explanation:

Have a great day

(GIVING BRAINLIEST!!)

Due to altitude, you might find snow here during the summer months.

A) By a lake
B) In the forest
C) In the ocean
D) On a mountain

Answers

Answer:

D

Explanation:

Since the temperature is colder at a higher altitide you can use that knowledge to think about how high these places are relative to eachother. You can then take the highest one for your answer

D

Higher up it is colder

Find 2 ways that natural gas forms. List the steps of the two carbon pathways below. Label each location with A for atmosphere, B for the biosphere, G for geosphere, or H for hydrosphere. Use P for the anthroposphere.

Answers

Answer:

Biogenic and thermogenic

Explanation:

Biogenic and thermogenic are the two ways or mechanism that is responsible for formation of natural gas. Biogenic gas is formed with the help of methanogenic organisms that is present in marshes, bogs, landfills, and shallow sediments. Thermogenic gas is formed from organic matter that is buried in the deeper earth where the temperature and pressure are very high.

The organic pathway of the carbon cycle is the pathway in which carbon moves from atmosphere, through producers, herbivores and other organisms in the ecosystems, and converted back to the atmosphere.

In geological pathway, carbon moves from the atmosphere, through the ocean to rocks and the mantle, and then back to the atmosphere.

2. Which atom in the water molecule is negatively charged?

Answers

Answer:

oxygen atom

Explanation:

The unequal sharing of electrons gives the water molecule a slight negative charge near its oxygen atom and a slight positive charge near its hydrogen atoms. When a neutral molecule has a positive area at one end and a negative area at the other, it is a polar molecule.

Answer:

The oxygen

Hydrogen is positive

Explanation:

Drag the tiles to the boxes to form correct pairs.
Match the parts of fruits.

Answers

The form correct pairs can be matched with the parts of fruits as;

Mesocarp- flesh stuff inside Endocarp- papery part of seed Exocarp-skin of the fruit

What is pericarp and endocarp?

The epicarp, which is the outermost layer, the mesocarp, which is the middle layer, and the endocarp, which is the inner layer enclosing the ovaries or the seeds, are the three separate layers that make up the pericarp in fleshy fruits.

The fruit's exterior surface is made up of the exocarp, the fruit's top layer. The tissue between the exocarp and endocarp is called the mesocarp. The innermost layer, called the endocarp, is situated just outside the seed coat.

Read more about fruits

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What is the difference between flu viruses and the measles virus?

Answers

Answer:Influenza and measles are viruses that both cause respiratory symptoms. The typical measles rash does not appear for 2-4 days, so during influenza season, symptoms of early measles can be confused with influenza.

Explanation:

Explanation:

Vaccines for both measles and flu already exist, however the flu vaccine must be updated because of the virus's ability to change and adapt in order to invade cells in the human body. The goal of researchers was to find genes in each virus that cannot survive changes.

By comparing two similar viruses which attack the body in similar ways through the lungs, researchers confirmed that the measles virus is much less open to evolutionary change by using an experimental technique called insertional mutagenesis to change the genes of each virus.

7. In a heterozygous person, which allele will actually be expressed (seen) in the phenotype? O dominant O recessive O both​

Answers

Answer:

both... I think... Is there more context?

Explanation:

Hope this helped! Good luck! :)

what makes some melt? What happens to the particles in snow as it melts?

Answers

Heat and kinetic energy makes snow melt. The particles start to create kinetic energy as they start moving a lot. Can I have brainliest pls?

PLZZ HELP!
In what organelle is the genetic material found inside?

Question 3 options:

Golgi Apparatus


Nucleus


Ribosome


Mitochondria

Answers

Answer:

nucleus is the answer your welcome

Answer:

nucleus

Explanation:

Im taking the test now

how many cells are in each phase and whats the percent of the cells

Answers

I dont know hope you found out

What is the function of a coenzyme?
1. Binds to the substrate to raise activation energy
2. Inhibits the metabolic pathway of the enzyme
3. Couples with an enzyme to help remove or add electrons in order for the reaction to be catalyzed
4. Is a secondary protein complex that produces ATP

Answers

i believe the answer is c

Ribosomes assemble proteins from___?
DNA
amino acids
mitochondria
cytoplasm

Answers

Answer:

Amino acids.

Explanation:

Cytoplasm, the final stages of assembly occur in the cytoplasm of the cell
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