Unit 9 Cell Stuff Flashcards
1
Q
Mitosis
A
- makes body cells
- results in the doubling of chromosome number and cell number
- makes 2n cells
2
Q
2n cells
A
have 2 sets of chromosomes
diploid
3
Q
n cells
A
have 1 set of chromosomes
haploid
4
Q
meiosis
A
- makes sex cells
- results in haploid cells bc one set comes from mom (egg) and one set comes from dad (sperm)
5
Q
how many pairs of chromosomes do we have in each cell/sex cell
A
23 pairs in regular cell –> 46 chromosomes
only 23 chromosomes in sex cells
6
Q
fertilization
A
when egg and sperm meet to form zygote
7
Q
crossing over
A
increases genetic diversity
