khemphill6740 khemphill6740

02-01-2023
Biology

Answered

A horticulturalist wants to produce geraniums with specific characteristics.

she knows that the trait of red flowers is governed by the allele r(rr and rr) and the trait of white flowers is governed by the allele (rr).

the horticulturalist has an unknown geranium with an uncertain genetic makeup. she crosses it with a red geranium (rr) and gets a generation in which half of the plants have red flowers and half have white flowers.
r r
? rr rr
? rr rr

what does this combination of offspring tell her about the genetic makeup of the red geranium parent?

the trait shows incomplete dominance.
the unknown geranium is homologous for white flowers (rr).
the unknown geranium is heterogeneous for red flowers (rr).
the unknown geranium is homologous for red flowers (rr).

Answer :

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