Some viruses are 4. For bears, black fur (B) is dominant to white fur (b). Deter
ID: 134006 • Letter: S
Question
Some viruses are 4. For bears, black fur (B) is dominant to white fur (b). Determine the expected phenotype and genotype of offspring resulting from the following parents: a homozygous black and homozygous white. b. two heterozygous blacks c. heterozygous black and a white. d. Which two problems above represent the results you would get from a test cross D?hybridCross: 5. True breeding peas each with two different characteristics, like a yellow (), round (R) seeds and green Yc (v). wrinkled (r) seeds were crossed in the P generation. Fi generation was all yellow and round. To figurev out the Fa generation, the Punnett square must have sixteen little squares to cover all the possiblilities. What Is the phenotype of the Fa generation? Y-an / PE(D?hybrid cross) In moose bro m coatc or(B)is mi ant to albino (no pigment) b) andre gheatR) is dominant to smooth coat (c). Two moose are selected for breeding and their genoytypes are BBr and bbRR. Determine the expected genotype and phenotype ratios for the: a. Fi generation b. Fageneration c. cross between an F and a genotype of BBRrExplanation / Answer
4) The genotype of homozygous black fur bears - BB.
The genotype of homozygous white fur bears - bb.
The genotype of heterozygous bears - Bb.
a. Cross between homozygous black and homozygous white:
BB X bb
Gametes formed B b
Next generation Bb(all have black fur).
All bears have Bb genotype with black fur phenotype.
b. Cross between two heterozygous blacks.
Bb X Bb
Gametes formed B and b B and b.
Next generation:
The phenotypes: 3 bears have black fur and 1 has white fur.
The genotypes: 1 has BB, 2 have Bb and 1 has bb.
c. Cross between heterozygous black and a white.
Bb X bb
Gametes formed B and b b and b.
Next generation:
The phenotypes - 2 bears have black fur and 2 have white fur.
The genotypes - 2 bears have Bb and 2 have bb.
d. Problem c represents the results would get from a test cross.
Test cross is genetic cross between a homozygous recessive individual and heterozygous.
Male/female B b B BB(black fur) Bb(black fur) b Bb(black fur) bb(white fur)Related Questions
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