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tigry1 [53]
2 years ago
9

How does the human immune system initially respond to a pathogen?

Biology
1 answer:
Lapatulllka [165]2 years ago
6 0

Answer:The immune system responds to antigens by producing cells that directly attack the pathogen, or by producing special proteins called antibodies. Antibodies attach to an antigen and attract cells that will engulf and destroy the pathogen.

Explanation:

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Which variable is likely to undergo the largest change in value resulting from a mutation that introduces a new allele into a po
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Answer:

b. average heterozygosity

Explanation:

From the available options:

a. nucleotide variability

b. average heterozygosity

c. average number of loci

d. geographic variability

Nucleotide variability represents a form of genetic variation that occur as a result of difference in nucleotide sequence of deoxy ribonucleic acid.

The locus is a region on the chromosome where genes are located. Average number of locus thus refers to total number of loci per total number of individuals in a population.

Geographic variability refers to difference in genetic traits across the various geographical distribution of a population.

Average heterozygosity is the percentage or proportion of heterozygous individuals for a trait within a population. It is a common measure of genetic variation in a population.

When a mutation occur within a population and this leads to the introduction of a new allele at a locus for which some individuals within the population are homozygous, it will directly affect the average heterozygosity of the population because more individuals will lose their homozygosity and become heterozygous.

<em>The correct option is b.</em>

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ahrayia [7]
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Which celestial body did the mattress fall the fastest?
Andreyy89

Answer:

What are the options and what are the different celestial bodies?

Explanation:

you can't expect someone to fully answer a question where they need more information to answer it in the first place> if you edit your answer, you should be able to add those needed pieces of information to the question!

that or you might get flagged for having a confusing or incomplete answer, i wouldn't do that i'm just warning you for future reference!

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What is a nerve’s long threadlike bundle that conducts electrical impulses?
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Answer:

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Explanation:

Hope it helps you

have a good day dear friend

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