Hair texture is an incomplete dominant trait. Curly hair (HH) and straight hair (H'H') make wavy hair (HH'). Cross a wavy and a straight haired parent and list the phenotypic ratio of the offspring.
Question
Hair texture is an incomplete dominant trait. Curly hair (HH) and straight hair (H'H') make wavy hair (HH'). Cross a wavy and a straight haired parent and list the phenotypic ratio of the offspring.
Solution
To solve this problem, we need to understand the genetics involved.
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First, let's identify the genotypes of the parents. The wavy haired parent has the genotype HH' and the straight haired parent has the genotype H'H'.
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Next, we set up a Punnett square to predict the possible genotypes of the offspring. The Punnett square is a simple diagram used in genetics to show the probabilities of different genotypes.
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The Punnett square for this cross would look like this:
H H' H' HH' H'H' H' HH' H'H' -
Now, we can determine the phenotypic ratio of the offspring. The phenotypic ratio describes the expected numbers of different phenotypes (physical appearances) produced by a particular genetic cross.
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From the Punnett square, we can see that half of the offspring will have wavy hair (HH') and half will have straight hair (H'H').
So, the phenotypic ratio of the offspring is 1:1 (wavy:straight).
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