If a cross is made between AA and aa, the genetic nature of F1 progeny will be:Select an answerAAABAaCaaDAaAa

Break Down the Problem

1. Identify the genotypes of the parent organisms.
2. Determine the possible genotypes of the F1 progeny resulting from the cross.

Relevant Concepts

1. In genetics, "A" represents one allele and "a" represents another.
2. The cross is between a homozygous dominant (AA) and a homozygous recessive (aa) plant.

Analysis and Detail

1. The parent genotypes are:

   • Parent 1: AA (homozygous dominant)
   • Parent 2: aa (homozygous recessive)

2. When these are crossed:

   • The possible gametes from Parent 1 (AA) are A and A (only A, since both alleles are the same).
   • The possible gametes from Parent 2 (aa) are a and a (only a, since both alleles are the same).

3. The F1 progeny will be formed by combining these alleles:

   • Possible combinations:
     • From A (Parent 1) and a (Parent 2): Aa
     • From A (Parent 1) and a (Parent 2): Aa

   Thus, all F1 progeny will be Aa.

Verify and Summarize

The F1 generation will consist entirely of heterozygous individuals with the genotype Aa.

Final Answer

The genetic nature of the F1 progeny will be B. Aa.