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PilotLPTM [1.2K]
2 years ago
12

Which of the following components of the immune system is the target for vaccinations?

Biology
1 answer:
gulaghasi [49]2 years ago
3 0

Answer:

The correct answer is option D. the adaptive immune system.

Explanation:

The adaptive immune system is the immune system that takes place after the first exposure to a specific antigen either from vaccination or a pathogen. Adaptive responses are of two types: the cell-mediated and humoral immune response, the cell-mediated immune response occurs with the help of T cells, and where is humoral immune response is B cells and antibodies.

Vaccination targets the adaptive immune system as they produce antibodies against the pathogen provided by vaccination.

Thus, the correct answer is option D. the adaptive immune system.

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Two short-haired guinea pigs are mated several times. Out of 100 offspring, 25 of them have long hair. What are the probable gen
Alekssandra [29.7K]

Answer:

Ss (male) × Ss (female)

Explanation:

This question involves a single gene coding for hair length in guinea pigs. Based on the information in this question, the allele for short hair (S) is dominant over the allele for long hair (s). This means that a guinea pig will only be phenotypically long-haired if the genotype is "ss".

According to this question, Two short-haired guinea pigs are mated several times. Out of the 100 offsprings produced by this cross, 25 of them have long hair (recessive). This means that the phenotypic ratio of this cross is 3 short hair : 1 long hair i.e. 100 - 25 = 75 short hair. 75/25 = 3/1 = 3:1

To produce this phenotypic ratio, the parents must both be heterozygous (Ss) for the hair length gene.

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3 years ago
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siniylev [52]

Answer:

Explanation:

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3 years ago
What is the common name of the group whose members are characterized by endoskeleton and a unique water vascular system?
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A. Echinoderms

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How does geographic distribution of organisms support evolutionary theory?
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Because the organism is distributed across the world, and isn't seen anymore, scientists can conclude tat they must have evolved. They can compare one species to the fossils they may have found, and determine that they were related. Then by looking at the species on another part of the world compare the same fossils to other animals and determine that they are similar, sharing a common ancestor.
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List the four levels of organization in the human body from smallest to largest. Give an example of each level.
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