Biology benchmark 2 semester exam fall 24

Question

The color of the petals incar cormation is determined by an incomplete dominance pattern.The pundit square is used to determine the geotypes of the offspring ofhave ahomozygous red (RR) and a homozygous white (rr) carnation

According to the Punnett square what color of petals could result from the pairing of these plants
Only red flowers
Only pink flowers
Red and pink flowers
White and red flowers

Answer 1

In the case of incomplete dominance, the offspring of two homozygous plants (one red and one white) will have a blended phenotype.

In this scenario:

• The red carnation is homozygous (RR).
• The white carnation is homozygous (rr).

When creating a Punnett square for these two genotypes:

     R   |   R
------------
 r | Rr  |  Rr
------------
 r | Rr  |  Rr

All offspring (Rr) will have the genotype of Rr, which corresponds to the phenotype of pink flowers due to the incomplete dominance.

Therefore, the correct answer to your question is only pink flowers.