Consider a gene with four alleles a1, a2, a3, and a4. in the cross a1a2 × a3a3, how many offspring genotypes are possible?

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04-10-2017
Biology

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Consider a gene with four alleles a1, a2, a3, and a4. in the cross a1a2 × a3a3, how many offspring genotypes are possible?

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davidsilva2019 davidsilva2019 · Answer 1 · 2017-10-11T17:56:13+02:00

With allele crossing we can represent it for an easier understanding by a table like the following:
   _______Parent 1_______
      | |____a1___|____a2____
  |a3|   a1a3 | a2a3
Parent 2|__|_________|__________
|a3| a1a3 | a2a3
| | |

It is possible to form two genotypes. When the there is one homozygous individual, the variety in the combination will depend solely on the variation of the other parent.