unit 7 - meiosis vocab Flashcards
1
Q
homologous chromosomes
A
chromosomes that share genes that code for the same trait
2
Q
homologous pair
A
1 from female, 1 from male
3
Q
fertilization
A
paired chromosomes when egg & sperm meet
4
Q
somatic cells
A
body cells
5
Q
diploid cells
A
- make up body
- contain all DNA from both parents
6
Q
A
7
Q
gametes
A
sex/repro cells
8
Q
haploid cells
A
- sperm & egg cells
- has half of DNA of diploids
9
Q
meiosis
A
- creates 4 haploid gametes
- uses 1 diploid cell
10
Q
law of segregation
A
ensures resulting haploid cells only have 1 copy of each gene
11
Q
alleles
A
one of the two letters (doesnt matter if recessive or dominant)
12
Q
independent assortment
A
chromosomes & genes represented seperately from each other
13
Q
crossing-over
A
exchange of segments between homologous pairs of chromosomes
14
Q
tetrad
A
- leads to crossing over
