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2 years ago

________ are the most commonly used species for animal research.

Biology

1 answer:

EastWind [94]2 years ago

4 0

Answer:

Mice and rats make up approximately 95% of all laboratory animals, with mice the most commonly used animal in biomedical research.

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MOst cells in a typical brain are a) haploid b)diploid C) triploid D) a mixture of haploid and diploid D) the brain is not made

sergiy2304 [10]

B) Diploid - Only Gametes are Haploid. Every other cells are somatic cells which are diploid. They contain 46 chromosomes rather than 23 that the haploid carry. Neurons and glial cells make up of the brain and that makes up the nervous tissue. Just remember Gametes (sex cells) are the only cells that are haploids.

5 0

3 years ago

Some plants are tall and some are short what is most likely true about this trait

pochemuha

Can you please show the answer choices to pick from?

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3 years ago

It is predicted that Earth’s population will ___________ in the future.

daser333 [38]

The answer will be increase slightly and then decrease. Hope you get it!

8 0

3 years ago

Examine the genotype for an individual who is AaBbCcDc. Predict the outcomes of meiosis and the potential gamete combinations th

Katarina [22]

Answer: 16 different gametes

ABCD
ABCd
ABcD
ABcd
AbCD
AbCd
AbcD
Abcd
aBCD
aBCd
aBcD
aBcd
abCD
abCd
abcD
abcd

Explanation:

Gamete formation involves the random and independent segregation of alleles. During anaphase 1 (meiosis), occurs the independent separation of homologous chromosomes that migrate to opposite poles of the cell. This separation generates different chromosomal combinations in the daughter cells. There are two alternatives per homologous pair.

The number of gametes with different combinations is 2ⁿ, where

n = number of homologous pairs.

In the exposed example there are 4 pairs of chromosomes, so

the number of possible combinations of chromosomes = 2ⁿ = 2⁴ = 16

Individual: AaBbCcDdEe

You can make use of the fork line method to easily figure out the possible gametes.

A.......B.........C........D → ABCD

........d → ABCd

...........c.........D → ABcD

........d → ABcd

b.........C........D → AbCD

........d → AbCd

...........c.........D → AbcD

........d → Abcd

a.......B.........C........D → aBCD

........d → aBCd

...........c.........D → aBcD

........d → aBcd

b.........C........D → abCD

........d → abCd

...........c.........D → abcD

........d → abcd

7 0

3 years ago

Fill in the blank to complete the statement.

aleksklad [387]

I think its reproductive cells like egg or sperm

8 0

3 years ago