Livestock Genetics Flashcards
1
Q
Chromosome
A
Large molecule containing DNA (made of genes)
2
Q
Gene
A
Segment of chromosome composed of DNA
3
Q
DNA
A
Two strands of sugar phosphate backbone with bridges of nitrogen base
4
Q
Nucleotide
A
Sugar, phosphate, and one of the 4 nitrogen bases
5
Q
Genotype can be expressed as economically important traits
A
TRUE
6
Q
What is a key principle of breeding systems?
A
Transmission of Traits
7
Q
Alleles
A
Alternate forms of a gene that affect the same trait (If they match at a specific location, they are homozygous)
8
Q
Linebreeding
A
Purposely
9
Q
Inbreeding
A
More direct (brother and sister)
10
Q
Homozygous
A
(aa) Parents
11
Q
Heterozygous
A
(Aa) Parents
12
Q
Alleles are …
A
Dominant (R) or Recessive (r)
13
Q
R (Dominant)
A
ex) Black coat color
14
Q
r (recessive)
A
ex) red coat color
15
Q
RR
A
Homozygous dominant (black)
