Study Biology

Question 57

(Multiple Choice)

Use the following description and figure to answer the questions below.
In a particular plant,leaf colour is controlled by gene locus D.Plants with at least one allele D have dark green leaves,and plants with the homozygous recessive dd genotype have light green leaves.A true-breeding dark-leaved plant is crossed with a light-leaved one,and the F₁ offspring is allowed to self-pollinate.The predicted outcome of the F₂ is diagrammed in the Punnett square shown below,where 1,2,3,and 4 represent the genotypes corresponding to each box within the square.
Use the following description and figure to answer the questions below. In a particular plant,leaf colour is controlled by gene locus D.Plants with at least one allele D have dark green leaves,and plants with the homozygous recessive dd genotype have light green leaves.A true-breeding dark-leaved plant is crossed with a light-leaved one,and the F₁ offspring is allowed to self-pollinate.The predicted outcome of the F₂ is diagrammed in the Punnett square shown below,where 1,2,3,and 4 represent the genotypes corresponding to each box within the square. -Which of the plants will be true-breeding? A)1 and 4 only B)2 and 3 only C)1, 2, 3, and 4 D)1 only E)1 and 2 only
-Which of the plants will be true-breeding?


A)1 and 4 only
B)2 and 3 only
C)1, 2, 3, and 4
D)1 only
E)1 and 2 only

Answer

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