In certain plants, leaf color is controlled by gene D. Plants with a dominant allele D have dark green leaves and plants with the homozygous recessive dd genotype have light green leaves. 2 heterozygous plants are crossed and the square is seen below. Which boxes will correspond to dark leaved plants?
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4 points
Captionless Image
1, 2 and 3 only
1 and 2 only
1 only
2 and 3 only
4 only
To determine which boxes correspond to dark leaved plants, we need to identify the genotypes represented in each box and determine their corresponding leaf color.
Let's assign the genotypes for the parent plants as follows:
Plant 1: Dd
Plant 2: Dd
To create the Punnett square, we will cross the two parent plants:
D d
D DD Dd
d Dd dd
From the Punnett square, we can see that the genotypes represented in each box are:
Box 1: DD (dark leaved plant)
Box 2: Dd (dark leaved plant)
Box 3: Dd (dark leaved plant)
Box 4: dd (light leaved plant)
Therefore, the boxes that correspond to dark leaved plants are 1, 2, and 3.
The correct answer is: 1, 2 and 3 only.