Non-Mendelian Genetics Flashcards
1
Q
Dihybrid crosses
A
Crossing involving 2 genes/sets of alleles
2
Q
What is the phenotypic ratio
A
9:3:3:1
3
Q
Incomplete dominance
A
neither allele is dominant (red + white = pink)
4
Q
Codominance
A
Both alleles are dominant and expressed (ie. striped cows)
5
Q
Multiple alleles
A
A gene may have more than 2 possibilities (ie. subscripts give added variation)
6
Q
What is the difference between different blood types?
A
Type of antigen on its surface (or no antigen)
7
Q
What are the genotypes for type A, B, AB, and o blood?
A
A or AO
B or BO
AB only
OO only
8
Q
Blood types are an example of ____ and _____
A
multiple alleles and codominance
9
Q
Sex linked traits
A
coded for by genes, usually the x chromosome because its larger, disproportionately affects males
