Which characteristic of the male reproductive system is not variable among animal species that reproduce sexually? view available hint(s) which characteristic of the male reproductive system is not variable among animal species that reproduce sexually? presence of genitalia. shape of genitalia. presence of a scrotum. composition of accessory fluids?

100% of the progeny will be speckled

Explanation:

Available data:

Cross: dark brown crab  with a light brown crab

Parentals) BB     x     bb

Gametes) B   B        b    b

Punnett square)

                     B        B

            b      Bb      Bb

             b     Bb      Bb

F1) Genotype:

     4/4 = 100% of the progeny will be heterozygous for the trait, Bb

     Phenotype:

    4/4 = 100% of the progeny will be speckled