Question

page(s) 134 - 136 7.2. describe the importance of gregor mendels experiments to our understanding of inheritance. complete the passage describing mendels experiments. when mendel crossed a set of \true - breeding\ purple - flowered (pp) pea plants with a set of true - breeding white - flowered (pp) pea plants, he found that of the offspring had purple flowers. this result on its own showed that the purple flower trait was to the white flower trait, but to understand that the offspring carried one allele from each of the parents, he needed to half cross the offspring with each other pp neutral recessive all dominant pp 3/4 dissect the flowers cross the offspring with the true - breeding purple - flowered parent

Explanation:

When Mendel crossed \(PP\) (purple - flowered) with \(pp\) (white - flowered) pea plants, using the Punnett square \(P\times p\) (where \(P\) is from the purple - flowered parent and \(p\) is from the white - flowered parent), all offspring have the genotype \(Pp\). Since the \(P\) (purple) allele is dominant over the \(p\) (white) allele, all offspring (\(Pp\)) show the purple - flower phenotype. To show that offspring carry one allele from each parent (i.e., to demonstrate segregation and independent assortment in a more complex way), he needed to cross the \(Pp\) offspring with each other (\(Pp\times Pp\)).

Answer:

all; dominant; cross the offspring with each other