Sex related Inheritance patterns Flashcards
1
Q
Sex linked
A
gene on the sex chromosome
2
Q
X-inactivation
A
when 1 of the 2 X chromosomes are silenced
3
Q
what sex does X-inactivation occur in?
A
females
4
Q
what is another name for X-inactivation
A
Lyonization
5
Q
what is an example of X-linked traits
A
calico in cats
6
Q
Ishihara tests
A
test for colour blindness
7
Q
Z linked traits
A
allele is on Z chromozome
8
Q
Y-linked traits
A
gene for SRY in males
9
Q
Sex influenced traits
A
phenotype is affected whether mutation is on female/male
10
Q
what is an example of a sex influenced trait?
A
Scurs
11
Q
Epistasis
A
masking of 1 gene
12
Q
what is an example of epistasis
A
albinism
13
Q
Scurred cattle phenotype
A
P/p Sc/Sc
14
Q
Sex limited traits
A
phenotype is only expressed by 1 sex but both have the alleles
15
Q
what is an example of a sex limited trait?
A
cryptochidism
