Genetics Flashcards
1
Q
What is a “Locus”?
A
A gene’s position on a chromosome.
2
Q
What is an allele?
A
A variant form of a gene. Ex: B or b
3
Q
What is a genotype?
A
The gene present in an organism. Ex: Bb, BB, bb
4
Q
What is a phenotype?
A
The external appearance or observable trait. Ex: Brown, Red, Black
5
Q
Homozygous?
A
Two alleles of a pair are the same. BB or bb
6
Q
Heterozygous?
A
Two alleles of a pair are different. Bb
7
Q
Diploid organisms inherit a pair of genes for?
A
Each trait
8
Q
Independent Assortment Rule
A
Each gene pair assorts into gametes independently of other gene pairs that are located on nonhomologous chromosomes.
9
Q
Monohybrid cross?
A
Crossing one pair of genes to determine 1 trait
10
Q
Males contain which two chromosomes:
A
XY
11
Q
Females contain which two chromosomes:
A
XX
