Punnett's Squares Flashcards
1
Q
What is a mono hybrid cross?
A
2 x 2 square. One trait.
2
Q
What is a dihybrid cross?
A
4 x 4 square. Two traits
3
Q
Incomplete Dominance
A
Neither allele for a gene completely conceals the presence of the other
“they share the spotlight”
4
Q
Co-dominance
A
Both alleles for a trait are expressed equally in a heterozygous, both are dominant
“they are perfect sharers”
5
Q
Multiple alleles (blood types)
A
Type A = IAIA or IAi
Type B = IBIB or IBi
Type AB = IAIB
Type O = I I
6
Q
Polygenic inheritance
A
When one characteristic is controlled by two or more genes
example hair color skin type
7
Q
Sex linked traits
A
Carried on or transmitted by a sex chromosome
8
Q
What is a Punnet Square?
A
A way for you to protect the possible outcome of the genetic cross.
They can also predict the ratio of the expected outcome of the offspring.
