Types of Inheritance & Dihybrid Cross Flashcards
1
Q
What is “Codominance”?
A
A condition in where both alleles are expressed equally in the phenotype (e.g two-toned cows, AB blood types)
2
Q
What is “sex-linked”?
A
Where traits are associated with genes on sex chromosomes (e.g colour blindness occurs on the X chromosome).
3
Q
What is “incomplete dominance”?
A
A condition where the heterozygous phenotype is combined between 2 homozygous phenotypes (e.g red and white flowers produce a pink flower).
4
Q
What does “multiple alleles” mean?
A
There are more than 2 possible alleles for a single gene.
5
Q
What is the phenotypic ratio for a dihybrid cross?
A
9:3:3:1
