AP BIOLOGY

HEREDITY

MONOHYBRID CROSS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
In a dihybrid cross, ____ pairs of contrasting traits are being crossed.
A
one
B
two
C
three
D
four
Explanation: 

Detailed explanation-1: -In a dihybrid cross where two parents (pea plants) differ in two pairs of contrasting traits, that is, pod color and pod shapes color, are crossed.

Detailed explanation-2: -Dihybrid Cross: A cross involving two pairs of contrasting traits. For example, cross true breeding plants with yellow, round seeds to true breeding plants with green, wrinkled seeds will yield an F1 generation of all yellow, round seeds.

Detailed explanation-3: -The term “dihybrid cross” refers to the simultaneous inheritance of two sets of opposing traits by two parents.

Detailed explanation-4: -Cross involving only one pair of contrasting characters is called monohybrid cross.

Detailed explanation-5: -Dihybrid cross is a cross between two individuals with two observed traits that are controlled by two distinct genes.

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