A sperm cell and an ovum each contribute 23, rather than 46, ...

[cmoore54]

A sperm cell and an ovum each contribute 23, rather than 46, chromosomes to a zygote because they
 
  a. were produced through the process of meiosis.
  b. were produced through the process of mitosis.
  c. have undergone the process of crossing over.
  d. have undergone the process of canalization.

Question 2

Dr. Spock is using a microscope to observe a reproductive germ cell. He suddenly remarks, That cell just underwent meiosis What has Dr. Spock just seen?
 
  a. One cell ingesting another cell
  b. A cell dividing into new cells with twice as many chromosomes as the original reproductive cell
  c. The process of fertilization
  d. A cell dividing into new cells with half of the chromosomes of the original reproductive cell

[leannegxo]

Answer to Question 1

a

Answer to Question 2

d

[cmoore54]

Excellent

[isabelt_18]

Gracias!