1. Codominance results in:
a) joint expression of two alleles
b) intermediate expression of two alleles
c) sometimes dominance , sometimes recessiveness
d) none of the above
(I am stuck between A or B. Why is A or B the answer? TYSM!)
CAN you please explain how to get these two following questions? I am kind of confused. TYSM!-->
2) In drosophila, fused veins is inherited as an X-linked recessive. If a fused vein male is crossed with a wild type female, the phenotypes of the F1 offspring will be:
A) All fused vein
B) All wild type
c) 1/2 wild type females, 1/2 fused vein males
D) 1/2 fused vein females, and 1/2 wild type males
E) 1/2 wild type famels: 1/4 wild type males: 1/4 fused vein males
3) The recessive muations curved wing and sepai eye are located on different autosomal chromosomes in drosophila. A curved wing female is crossed to a sepia eye male to produce the F1. If an F1 female is then crossed to a curved wing, sepia male, what phenotypic ratio will be expected in their offspring?
A) 1/4 WT ; 1/4 sepia; 1/4 curved; 1/4 sepia, curved
B) 2/4 WT; 1/4 Sepia; 1/4 curved
C) 9/16 WT; 3/16 sepia; 3/16 curved; 1/16 sepia, curved
D) 1/2 sepia; 1/2 curved