A pea plant that has round seeds are dominate over winkled seeds in pea plant. Fill in the punnett sqares and determine the expected genotypes and phenotypes of the f1 generation by crossing homozygous recessive and heterozygous parents.

A homozygous recessive pea plant would have genotype rr and the heterozygous plant would have genotype Rr. So after the crossing between these two individuals occurs the two offspring produced would be heterozygous and the other two would be homozygous recessive.                    

                                      R    r

                                r   Rr   rr

                                r    Rr   rr

Therefore the genotype ratio would be 1:1 and the phenotypic ratio would also be 1:1 in the F1 generation because half would be round and half would be wrinkled.

amber has allowed scientists to study dna that has been preserved over millions of years.

because they are eaten by the frog and the frog getseaten by the snake and the snake by the eagle