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Want the answers clearly please Genetics - Worksheet #5 Incomplete Dominance / Codominance Name _____________________________ Date___________...

Want the answers clearly please


Genetics - Worksheet #5
Incomplete Dominance / Codominance
Name _____________________________ Date___________ Class___
Show the cross and then answer the question for each problem. (For your
answer use a different color, please)
1. In shorthorn cattle the gene for red coat color is not dominant over that for white coat color.
The heterozygous condition produces a roan color. A breeder has a white, red, and roan cows and bulls. What ​phenotypes​ can be expected from the following crosses?
A. Red x roan RR x Rr B. Red x red
C.. Roan x white D. Red x white
2. A homozygous black chicken is crossed with a homozygous ​splashed white​ chicken ( white with black splashes same as the chicken in the video) and the resulting offspring are ​blue Andalusian chickens​. Cross two heterozygous Andalusian chickens and give the results of their offspring.
3. In snapdragons, flower color shows incomplete dominance. Homozygous plants are white, and heterozygous plants are pink. What type of flowers will result in the F​ ( first
generation)of red and white? In the F2 ‘s (end generation)?
red or
frizzle
4. In Poultry, a form of incomplete dominance is for the trait” frizzle” F = frizzle N = no
and FN = slightly frizzled. If a frizzled male is crossed with a non-frizzled female, what will be
the genotypes and phenotypes for the F​ generation? 1​
IntheF​ ‘s

Homework Answers

Answer #1

It is given that Red id not dominant over white.

So the genotype of red is RR

The genotype of roan is the Rr

The genotype of white is rr.

so Red and Roan cross will be

R R
R RR = Red RR = Red
r Rr = Roan Rr = Roan

Red and Red cross will be

R R
R RR = Red RR = Red
R RR = Red RR = Red

Roan x white cross will be

R r
r Rr = Roan rr = White
r Rr = Roan rr = White

Red x white

R R
r Rr = Roan Rr = Roan
r Rr = Roan Rr = Roan
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