Help me please !!!
Which event in meiosis increases genetic variation within a population?
A. DNA condenses to form chromosomes.

B. Segments of chromosomes cross over.
C. Chromosomes duplicate themselves.
D. Chromosomes form pairs.

Answers

Answer 1

Answer:

Because of recombination and independent assortment in meiosis, each gamete contains a different set of DNA. This produces a unique combination of genes in the resulting zygote. Recombination or crossing over occur during prophase 1


Related Questions

On average, an adult male sea otter weighs 36 kg (79 pounds), with some individuals weighing as much as 45 kg (99 pounds). A female weighs an average of 23 kg (50 pounds). To maintain their weight, otters must consume 250 kilocalories/kg of body weight each day to survive. Otters eat almost entirely small invertebrates for which they must dive to catch.

You have been tracking an adult female otter who weighs 25 kg. Answer the following questions based on the data provided.

How many kilocalories must she consume each day to maintain her body weight?



Question options:

6,250 Kcals


275 Kcals


1,620 Kcals


9,000 Kcals

Answers

Answer:

the answer that i would presume is a

Explanation:

25 x 250

The female otter which weighs 25 kg must consume a total of 6,250 kilocalories per day in order to maintain her body weight.

According to the illustration, otters must consume 250 kilocalories per kg of body weight in order to survive.

A female otter that weighs 25 kg must, therefore, eat 25x of the recommended kilocalories per kg daily in order to main her weight.

Thus: 25 x 250

                    = 6,250 kilocalories

More on the otters can be found here: https://brainly.com/question/2792530

increase productivity due to nutrient abundance is called​

Answers

Answer:

primary production-?

Explanation:

hope u get it right

Primary production or productivity

1. Chromosomes are made of
and​

Answers

Answer:

protein and DNA

Explanation:

protein and DNA! Hope I helped !

In Leonardo da Vinci’s time, nobody knew that the arteries were joined to the veins by tiny, invisible capillaries. This means that even though he studied the heart in detail, he thought that the arteries and veins were dead ends. Why did this make it difficult for him to understand how the heart worked?

Answers

Answer:

It was difficult for him to understand how the heart worked because he wasn't fully aware of the pumping mechanism of the heart and how the circulation of blood goes inside the body. Not seeing the capillaries meant that the heart pumped blood towards the vessels and into a dead end. He couldn't understand where the blood that was being pumped goes to.

Explanation:

Leonardo da Vinci is considered one of the earliest persons to study the heart. Although he made an exceptional observation of the different parts of the heart, he couldn't track the capillaries. He didn't know that these tiny structures connected the arteries and the veins. He believed that the heart was meant to transfer heat from the liver going to the muscles. He also believed that the lungs helped cool the blood.

How does nitrogen gas make its way into the atmosphere?
O animals eating plants
O decomposition
O using denitrifying bacteria
O cell respiration

Answers

Answer:

Explanation:

Using denitrifying bacteria is the correct answer

A plasmid that encodes resistance to ampicillin and tetracycline is digested with the restriction enzyme PstI, which cuts the plasmid at a single site in the ampicillin-resistance gene. The DNA is then annealed with a PstI digest of human DNA, ligated, and used to transform E. coli cells. (a) What antibiotic would you put in an agar plate to ensure that the cells of a bacterial colony contain the plasmid

Answers

Answer:

tetracycline

Explanation:

When the DNA insert is ligated in Pstl site, the ampicillin gene is disrupted while tetracycline gene is still intact.

- If the bacterial colony is growth in a medium with only ampicillin, only the cells that contains the plasmid with the insert will grow.

- If the bacterial colony is growth in a medium with only tetracycline, the cells which have incorporated the plasmid will survive. We cannot distinguish between cells with plasmid + insert and plasmid alone.

- If the bacterial colony is growth in a plate with ampicillin + tetracyclin, only the cells with the plasmid without the insert will grow.

Therefore, to ensure that the cells of a bacterial colony contains the plasmid, they have to be seeded in a plate with tetracycline.

Humans drill wells into Earth's crust to draw out groundwater for drinking and
irrigation of crops. Which spheres are interacting? *
O
Atmosphere, biosphere, and hydrosphere

O Biosphere, hydrosphere, and geosphere

Geosphere, hydrosphere, and atmosphere

Atmosphere, biosphere, geosphere, and hydrosphere

Answers

Answer:

Biosphere, geosphere, hydrosphere

Explanation:

Which biomes would contain animals that migrate?
a- savanna
b-tundra
c-temperate deciduous forest
d-all of the above

Answers

Answer:

the forest

Explanation:

Which phrase describes the purpose of ubiquitin

Answers

Answer:

regulates other proteins

Explanation:

Ubiquitin is a small protein that is found in almost all cellular tissues in humans and other eukaryotic organisms, which helps to regulate the processes of other proteins in the body.

hope this helps, pls mark brainliest :D

Which elements are metals? Check all that apply.

Answers

i hope this helps you

Answer:

rhenium (Re), lithium (Li) , mercury (Hg)

Explanation:

hopes this helps u :)

Which organism is most closely related to the fish?
A lamprey
B mouse
C frog
D shark

Answers

Answer:

B, mouse Bc if you look at the cladogram the mouse line is the only one touching the fish line, therefore it would be most closely related

Answer:

B, mouse

Explanation:

What is the correct order for the levels of organization and living systems from the simplest to the most complex

Answers

Answer:

organelle, cells, tissues, organs, organ systems, organisms, populations, communities, ecosystem, and biosphere

Explanation:

The biological levels of organization of living things arranged from the simplest to most complex

HURRY PLEASEEE. Photosynthesis and respiration are important because they produce or breakdown food to release energy. T F

Answers

True ✨✨✨✨✨✨✨✨✨!!!!!!!!!!!!

Photosynthesis and cellular respiration form direct ______ reactions.

Answers

Answer:

photosynthesis and cellular respiration form direct opposite reactions

Photosynthesis and cellular respiration form direct opposite reactions.Photosynthesis is the anabolic process and cellular respiration is the catabolic one.

What is the place for photosynthesis ?

It takes place in the leaves where the chloroplasts have the cells that are undergoing the reactions where the food is synthesized.

Photosynthesis is the process by which plants prepare their food and it takes place in the presence of sunlight with the help of water and with the help of carbon dioxide it forms photosynthesis process where the reaction takes place.

Cellular respiration is the chain of reactions that are taking place in the cells where the reactions are taking place in the mitochondria and the chloroplasts and the reactions that are corresponding with each other.

Learn more about photosynthesis at :

https://brainly.com/question/1388366

#SPJ2

question 1. The construction of the Temple took seven years.
False True? question 2
Solomon sinned by allowing the corruption of God's people in the worship of idols.

True
False

Answers

1.) True .... 1 Kings 9:10 says it took Solomon 20 years altogether to build the Temple and his royal palace; the Temple itself was completed in 7 years

2.) True .... God hated it he would never have allowed it ....

Answer:

Question 1 true

question 2 true

Explanation:

Which of the following fire-adapted blomes is dominated by shrubs with cool, wet winters and hot, dry summers?
•Chaparral
•Savanna
•Prairie

Answers

i think it’s chaparral

Answer:

I believe chaparral

Explanation:

(BRAINLIEST)
A medical student is studying how the volume of blood in the circulatory system affects blood pressure. He measures the blood volume and pressure of two classmates, a man and a woman. He finds that the man has a higher blood volume but a lower blood pressure than the woman. He concludes that a person with low blood volume would tend to have high blood pressure. What additional factors should the student consider that would most likely affect blood pressure? (1 point)
Differences in overall outlook on life

Differences in size and gender

Differences in the day's food intake

Differences in the amount of recent exercise

Answers

Answer:

My guess is D, differences in the amount of recent exercise.

In a food chain or web, is organism would be classified as a(n)

Answers

Answer:

producer

Explanation:

The answer to this question would be PRODUCER . This question has already been asked on brainly

https://brainly.com/question/9870791

Explain how brassinosteroids are synthesised, perceived and promote plant growth and development. Please give named examples and critical analysis to support your answer

Answers

Answer:

Brassinosteroids are synthesized from phytosterols and they promote plant growth and development by modulating cellular processes (e.g, cell division, elongation, photomorphogenesis, responses to environmental stimuli, etc).

Explanation:

Brassinosteroids are phytohormones similar to steroid hormones. Phytosterols include sitosterol, campesterol, and stigmasterol, i.e., lipid (cholesterol) molecules that form the cell membranes. These polyhydroxylated steroidal phytohormones play a wide range of cellular roles during plant growth, development and immunity. Examples of brassinosteroid functions include plant development, xylem differentiation, responses to biotic/abiotic stresses, reproduction, etc. For example, campesterol, which is a precursor of brassinosteroid hormones, is an integral membrane component that functions during plant embryogenesis by regulating the permeability of cell membranes and by altering membrane-associated proteins, as well as signal transduction pathways.

select the correct statement about connective tissue. connective tissue cells are surrounded by a matrix made up of protein fibers and ground substances. correct or incorrect?

Answers

Answer:

correct

Explanation:

What is a stimulus?
there are no options actually so plz help thank you

Answers

Answer:

In general, a stimulus is something that provokes or causes an action or response, as in Failing that test was the stimulus I needed to start studying harder. The plural of stimulus is stimuli. Its verb form is stimulate, which typically means to spur into action or to invigorate.

Explanation:

Answer:

In physiology, a stimulus is a detectable change in the physical or chemical structure of an organism's internal or external environment. The ability of an organism or organ to detect external stimuli, so that an appropriate reaction can be made, is called sensitivity

Explanation:

it just is

A sequence of amino acids is formed during the process of _____.

a
transcription
b
translation
c
intron removal
d
replication

Answers

Answer:B

Explanation:

B translation..... because in the translation is where the amino acid is rlly formed :)

how does nature show art

Answers

Answer:

"Nature in art can take many visual forms, from photorealism to abstraction. Art can mimic nature, by seeking to visually replicate objects as they actually appear in real life."

Explanation:

What are the 2 types of fatty acids (and explain what each means, and an example)?

Answers

Answer:

saturated and unsaturated fatty acids

Explanation:

Saturated fats are a type of fat in which the fatty acid chains have all or predominantly single bonds.Rich sources of dietary saturated fatty acids include butter fat, meat fat, and tropical oils.

An unsaturated fat is a fat or fatty acid in which there is one or more double bond in the fatty acid chain. these include avocados, olive oil, fatty fish and nuts or seeds.

state 2 functions of mucus in small intestine

Answers

Answer:

Mucus is extremely important in the gastrointestinal tract. It forms an essential layer in the colon and in the small intestine that helps reduce intestinal inflammation by decreasing bacterial interaction with intestinal epithelial cells.

Explanation:

here are all of them

mark as brainleist

Which component of a galaxy is colorful and found in the space between stars

Answers

Answer:

dust

Explanation:

cause dusk can be any colors

Space between stars:

In astronomy, the interstellar medium (ISM) is the matter and radiation that exist in the space between the star systems in a galaxy. This matter includes gas in ionic, atomic, and molecular form, as well as dust and cosmic rays. It fills interstellar space and blends smoothly into the surrounding intergalactic space.

The component of a galaxy which is colorful is disk:

The various colors in a galaxy (red bulge, blue disks) is due to the types of stars found in those galaxy regions, called its stellar population.

Learn more:

brainly.com/question/26156765

What best describes enzymes?

Answers

Enzymes are converted into products by the reactions they catalyze. One enzyme can catalyze many different reactions. ... They are molecules made of amino acids that speed up chemical reactions by lowering the activation energy.

what is missing from the food chain? ( look at number 7)

Answers

Answer:

decomposer

Explanation:

producer-consumer-decomposer

Is The Pamlico Sound a potable water source ? If so , Why ?

Answers

Answer:

hidzfsdfdjfsjhkbdfsdfjksdjhkfsfsdfxs

Explanation:

dkasnldkmasjkdjlkasnmlkdna∑∑∑∑∑

pick two air masses and tell me about their characteristics include full name as well as the symbol​

Answers

Answer:

.

Explanation:

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