QUESTION 2 A male and a female with chromosomes “DDBb” (male) and “ddBB” (female
ID: 64835 • Letter: Q
Question
QUESTION 2
A male and a female with chromosomes “DDBb” (male) and “ddBB” (female) breed. How likely is their offspring to exhibit the DdBb genotype?
A: 0%
B: 25%
C: 50%
D: 100%
QUESTION 3
A male and a female with chromosomes “DD” (male) and “dd” (female) crossbreed. How likely is their offspring to exhibit the DD genotype?
A: 0%
B: 25%
C: 50%
D: 100%
QUESTION 4
A fruit fly is homozgous dominant for eye color(R) and heterozygous for wing lenth (w). What is his genotype?
A: RRww
B: RrWw
C: rrww
D: RRWw
QUESTION 5
You have a corn plant with the following genotype YYSs. What possible gametes can this plant make?
A: YS and ys
B: YS, Ys, yS and ys
C: yS and ys
D: YS and Ys
QUESTION 6
Some phenotypes, such as eye color, are controlled by multiple genes. If eye color was controlled by 5 genes, how many possible genotypes would there be?
A: 5
B: 10
C: 32
D: 25
QUESTION 7
There are three alleles for blood type, A,B and O. The blood type AB is an example of
A: homozygous dominance
B: codominance
C: blended inheritance
D: non-mendelian genetics
QUESTION 9
You crossed red-eyed fruit flies with white-eyed fruit flies and the F1 generation all had red eyes. However, in the F2 generation, 25% of the flies had white eyes. What does this mean?
A: White-eyes are the result of a mutation
B: Red eyes are dominant to white eyes
C: red and white are codominant
D: eye color in fruit flies does not follow mendelain genetics
QUESTION 10
There are no exceptions to Mendel's Law of Independent Assortment
A:True
B:False
Explanation / Answer
QUESTION 2
A male and a female with chromosomes “DDBb” (male) and “ddBB” (female) breed. How likely is their offspring to exhibit the DdBb genotype?
The TRUE statement is ................c. 50%
A: 0%
B: 25%
C: 50%
D: 100%
A cross between the chromosomes “DDBb” (male) and “ddBB” (female) shows, 50% DdBb.
DB
Db
dB
DdBB
DdBb
dB
DdBB
DdBb
QUESTION 3
A male and a female with chromosomes “DD” (male) and “dd” (female) crossbreed. How likely is their offspring to exhibit the DD genotype?
The TRUE statement is ...................A. 0%
A: 0%
B: 25%
C: 50%
D: 100%
If a male with homozygous dominant D and a female with homozygous recessive d is crossed, the offsprings exhibit heterozygous, dominant phenotype. But none of them exhibit dominant homozygous genotype.
D
D
d
Dd
Dd
d
Dd
Dd
DB
Db
dB
DdBB
DdBb
dB
DdBB
DdBb