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What is the probability that the first offspring from the cross listed below will be heterozygous...

What is the probability that the first offspring from the cross listed below will be heterozygous for all loci? (type as a decimal and round to 5 decimal places)

aa Bb dd Ee x AA bb Dd Ee
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Answer #1

Four types of gametes will be produced by each of the parent.

aaBbddEe will produce aBdE, aBde, abdE, abde.

AAbbDdEe will produce AbDe, AbDE, AbdE, Abde.

In order to obtain a progeny which is heterozygous for all loci, the gametes must interact in the following way, either aBdE X AbDe or aBde X AbDE.

Total 16 progeny/ offspring will be produced out of which only 2 will be heterozygous for all loci.

Hence the chances of having offspring of heterozygous for all loci will be 2/16 or 1/8 or 12.5%.

So the probability is 0.12500.

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