The allele in rabbits for short hair (H) is dominant to long hair (h). What are the probable offspring phenotypes from a cross between parents that are both Hh?
Question
The allele in rabbits for short hair (H) is dominant to long hair (h). What are the probable offspring phenotypes from a cross between parents that are both Hh?
Solution
The probable offspring phenotypes from a cross between parents that are both Hh (heterozygous for short hair) can be determined using a Punnett square.
Step 1: Set up the Punnett square. A Punnett square is a grid that allows you to determine the probability of inheriting a particular trait. In this case, each parent is Hh, so you would set up a 2x2 grid with one parent's alleles on the top and the other's on the side.
Step 2: Fill in the Punnett square. Each box in the Punnett square represents a possible combination of alleles in the offspring.
Here's how the Punnett square would look:
H h
-----------------
H | HH | Hh | ----------------- h | Hh | hh | -----------------
Step 3: Determine the probable offspring phenotypes.
- HH: Short hair, as the short hair allele (H) is dominant.
- Hh: Short hair, as the short hair allele (H) is dominant.
- Hh: Short hair, as the short hair allele (H) is dominant.
- hh: Long hair, as there are two recessive alleles.
So, the probable offspring phenotypes are 75% short hair and 25% long hair.
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