Download a. What kind of cell – diploid or haploid – are the body

Answer Key: Mitosis & Meiosis Review
A certain kind of animal has 40 chromosomes in its body cells. It develops sex cells are
produces offspring.
a. What kind of cell – diploid or haploid – are the body cells of the insect? diploid
Through what process do these body cells reproduce as the animal grows? Mitosis
b. What is the animal’s diploid number? 40
What is the animal’s haploid number? 20
c. How many chromosomes do the sex cells of the insect contain? 20
Are these cells haploid or diploid? Haploid
d. Through what process are the sex cells produced? Meiosis
e. How many chromosomes are in the zygote that was formed when the insect
reproduced? 40 Is the zygote haploid or diploid? Diploid
f. What process causes the zygote to grow into a multicellular organism? Mitosis
Assume that a cell starts with 20 chromosomes in its nucleus. Use the following diagram to
depict the number of chromosomes in the cell during various stages of meiosis. Label any
indicated step or structure.
Original cell
Interphase
Meiosis I
Meiosis II
Fertilization
gametes
zygote
Fertilized egg begins
To divide by mitosis