the female dog has black fur . the male dog has black fur. Figure out the phenotypes and genotypes of their possible puppies
Answer (1)
Answer:So, both the female and male dogs have black fur. That’s their phenotype — the physical trait we can actually see. But to figure out what kind of puppies they can have, we need to look at their genotype — the genetic makeup behind that black fur.Let’s assume that black fur (B) is dominant and brown fur (b) is recessive. This gives us a few possibilities:Case 1: Both parents are homozygous dominant (BB)Genotype of both parents: BBAll possible offspring genotypes: BBAll phenotypes: Black furConclusion: 100% of the puppies will have black fur and carry only black fur genes.Case 2: Both parents are heterozygous (Bb)Genotype of both parents: BbUse a Punnett square:Offspring genotypes: BB, Bb, Bb, bbGenotype ratio: 1 BB : 2 Bb : 1 bbPhenotype ratio: 3 black : 1 brownConclusion: There’s a 75% chance the puppies will have black fur, and a 25% chance they’ll have brown fur.Case 3: One parent is BB, the other is BbOffspring genotypes: 50% BB, 50% BbAll puppies will have black fur, but some will carry the brown fur gene.---Summary: The phenotypes of the puppies are mostly black fur, but some could be brown if both parents carry the recessive gene. The genotypes can be BB, Bb, or bb, depending on the genetic makeup of the parents.
