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3 years ago

I need help with this please!!!

Biology

1 answer:

Arisa [49]3 years ago

8 0

Answer: 1. Those eggs are more vulnerable than us making the need for p[protection against viruses extremely necessary

2. research while those vaccines failed and create one that resists its previous versions faults

3. A spike is always included to make your immune system resistant just in case that 99.9% works all the time rate fails to succeed.

4. the two vaccines being researched for the C o v i d - 1 9 pandemic include the P f i z e r B i o N T e c h C O V I D - 1 9 vaccine ad the M o d e r n a s C O V I D -1 9 v a c c i n e.

5. I am not a doctor just a senior in high school I would tell them listen to the professionals that have experience in that area.

Explanation: if your wondering why i spaced the names its because they wont let you type them connected hope this helps:)

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Consider a locus with two alleles - B and b. B is dominant, while b is recessive. There is no mutation. B has a selective advant

Marat540 [252]

Answer:

0.09

Explanation:

<h3><u>Before selection</u></h3>

Total number in population = 1000

Genotype frequencies

Genotype frequency of BB = 500/1000 = 0.5

Genotype frequency of Bb = 250/1000 = 0.25

Genotype frequency of bb = 250/1000 = 0.25

Allele frequencies

Allele frequency of B = BB genotype frequency + half of the Bb genotype frequency = 0.5 + (0.25/2) = 0.625

Allele frequency of b = bb genotype frequency + half of the Bb genotype frequency = 0.25 + (0.25/2) = 0.375

<h3><u>After selection</u></h3>

We are told that after selection, the genotype frequency of bb is changed as they become 50% less fit. This means the frequency of bb individuals changes from 250 to 125 individuals (50% reduction).

Now the total number of individuals is 500 + 125 + 250 = 875.

Genotype frequencies

Genotype frequency of BB = 500/875 = 0.57

Genotype frequency of Bb = 250/875 = 0.29

Genotype frequency of bb = 125/875 = 0.14

Allele frequencies

Allele frequency of B = BB genotype frequency + half of the Bb genotype frequency = 0.57 + (0.29/2) = 0.715

Allele frequency of b = bb genotype frequency + half of the Bb genotype frequency = 0.14 + (0.29/2) = 0.285

<h3><u>Change in frequency of B after 1 generation</u></h3>

0.715 - 0.625 = 0.09

7 0

3 years ago

The microtubules that form in prophase and control the chromatids are called___

scoundrel [369]

The micro tubes that form prophase and control chromatids are called spindle fibers.

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3 years ago

WILL BRAINLIST CORRECT ANSWER PLATO

Dmitrij [34]

Answer:

I believe the first one would be incomplete dominance, the second would be multiple alleles, and the third would be codominance.

Explanation:

The first one would be incomplete dominance because the child has a blend of the man's straight hair and the woman's curly hair, but neither of two hair types are completely dominant (if that makes sense).

The second one would be multiple alleles because, well, there are multiple alleles listed (more straightforward than the other two).

And the third one would be codominance because the traits of red color and white color are equally dominant.

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3 years ago

Animal cells store extra glucose in the form of glycogen. Which molecule do plants use to store extra glucose?

Ad libitum [116K]

The answer is D. starch.

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3 years ago

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A biologist found an asymmetrical organism. A part of the organism was injured, but it was able to repair itself through regener

natulia [17]

Answer:

Because the organism is asymmetrical and it was able to regenerate, it’s probably (an amphibian), and belongs to the phylum (Mollusca).

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2 years ago