1. The P generation includes one thorned and one thornless rose. The F1 generati

Question

1.       The P generation includes one thorned and one thornless rose. The F1 generation includes two offspring that both have thorns. These are bred together to create the F2 generation, four more roses, three with thorns, one thornless.

What kind of inheritance is this: simple, incomplete dominance, co-dominance, lethal genes, or sex-linked (recessive or dominant)?

Write out and define all possible genotypes and their resulting phenotypes for the rose with respect to the traits described above ( e.g., in a non-rose example, Qq = heterozygous for quirkiness)

Explanation / Answer

This example is of a simple Mendelian inheritance. The parent generation is homozygous (TT and tt), while the F1 generation is heterozygous(Tt). The F2 generation follows the inheritance pattern of a simple heterozygous cross (TT, Tt, Tt, tt)

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