Why secondary spermatocyte cannot be seen in the normal epithelium of the seminiferous tubules, and write it's the number of chromosome sets as "n" and the DNA content as "C".

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Jamar FerryLv2

9 Jun 2018

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Related questions

b. Can a defect in a checkpoint or checkpoints cause cells to be smaller than normal, without affecting DNA content? Name all such checkpoints if they exist, and explain how the defect can cause cells to be smaller.

c. Can a defect in a checkpoint or checkpoints cause cells to be larger than normal without affecting DNA content? Name all such checkpoints if they exist, and explain how the defect can cause cells to be larger.

d. Can a defect in a checkpoint or checkpoints cause some cells to have an extra chromosome? If so, name the checkpoint(s) and explain.

CAN SOMEONE PLEASE HELP ME WITH THIS WITH AN EXPLANATION FOR ALL THREE SHORT QUESTIONS ASAP.

Imagine that a human primary oocyte undergoes the first meiotic division but experiences a nondisjunction event such that both copies of chromosome 7 are transmitted to the first polar body and neither are inherited by the secondary oocyte. Oogenesis is then completed and the resulting egg is fertilized by a healthy sperm with normal chromosomal content.

a. How many chromosomes will be present in the resulting zygote?

b. Would you describe this zygote as haploid, diploid, polyploid, or aneuploid?

c. Would you expect this nondisjunction event to result in substantial phenotypic effects on the resulting offspring or would the outcome be more or less the same as if the nondisjunction event had not occurred?