NEED IT ASAP!!! Which statement about the specific immune response is FALSE?

Biology

1 answer:

Murrr4er [49]3 years ago

4 0

Answer:

The answer is: Clonal selection produces memory cells that are long-lived and can recognize the antigen in the future.

Explanation:

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During which phase of mitosis do the spindle fibers help to pull the chromosomes the center of the wall with a lineup

zimovet [89]

Answer:

The spindle, shown in figure below, consists of fibers made of microtubules. the spindle starts to form during prophase of mitosis kinetochores on the spindle attach to the centromeres of sister chromatids.

Explanation: Chromosomes line up at the metaphase plate under tension from the mitotic spindle.

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3 years ago

Explain the difference between prezygotic isolating mechanisms and postzygotic isolating mechanisms.

anastassius [24]

<h3><u>Answer and Explanation;</u></h3>

Prezygotic isolation is a type of reproductive isolation that occurs before the formation of a zygote can take place. In most cases mating does not even occur. Forms of prezygotic isolation include spatial, behavioral, mechanical and temporal isolation.
Postzygotic isolation on the other hand occurs after members of two different species have mated and produced a zygote. Forms of postzygotic isolation includes; hybrid sterility, hybrid inviability and hybrid breakdown.
Therefore; Prezygotic isolation prevents the fertilization of eggs while postzygotic isolation prevents the formation of fertile offspring.

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4 years ago

Etapas del desarrollo fetal.

olga_2 [115]

Answer:

This time is divided into three stages, called trimesters.

Explanation:

First trimester, spans from conception to 12 weeks

Second trimester, spans from weeks 13 and 28.

Third trimester, spans from weeks 29 to 40.

https://my.clevelandclinic.org/health/articles/7247-fetal-development-stages-of-growth

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3 years ago

Supplies the diaphragm

ycow [4]

Answer:

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7 0

4 years ago

How do scientists think probionts formed

liubo4ka [24]

Answer:

Scientists think that protobionts formed by accidental natural causes.

Explanation:

There is no scientific consensus as to how precursers to the first living cells could have occurred.

6 0

3 years ago

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