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Question

How many phenotypes are produced from the Test cross of AaBbCC?


A
8
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B
6
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C
4
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D
2
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Solution

The correct option is B 4
  • In a testcross, an individual with an unknown genotype is crossed with a homozygous recessive individual to identify the zygosity of the former from the proportion of offspring phenotypes.
  • Test cross of AaBbCC is AaBbCC x aabbcc as shown in the above image.
Therefore, four different phenotypes are produced in F1 as a result of this test cross.
So the correct option is '4'.

985854_1054605_ans_6d75d0153ab845bda1e4a6e5870c9d9b.png

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