Tightly curled or wooly hair is caused by a dominant gene in humans. If a hetero

Question

Tightly curled or wooly hair is caused by a dominant gene in humans. If a heterozygous curly-haired person marries a person with straight hair, what percentage of their offspring would be expected to have straight hair? Show your work using a Punnet Square. 2. If heterozygous tall pea plants with purple flowers (TtPp) are self-crossed, what proportion of the offspring will be tall with white flowers? a) Show your work using a Punnet Square b) Do the same problem showing how you can get the same answer using a branching diagram

Explanation / Answer

1. Lets assume the alleles as h for straight hair and H for curled hair.

The genotypes of the parents are Hh and hh

From the above, 50% of the offsprings have straight hair.

H h h Hh (curled ) hh (straight) h Hh (curled) hh (straight)

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