AP BIOLOGY

CELL DIVISION

MEIOSIS AND GENETIC VARIATION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
the blending of two traits
A
blending
B
recessive trait
C
incomplete dominance
D
homozygous
Explanation: 

Detailed explanation-1: -Incomplete dominance occurs when neither trait is truly dominant over the other. This means that both traits can be expressed in the same regions, resulting a blending of two phenotypes. If a white and black dog produce a gray offspring, this is an example of incomplete dominance.

Detailed explanation-2: -Incomplete dominance can occur because neither of the two alleles is fully dominant over the other, or because the dominant allele does not fully dominate the recessive allele. This results in a phenotype that is different from both the dominant and recessive alleles, and appears to be a mixture of both.

Detailed explanation-3: -Incomplete Dominance Examples Apart from plants, incomplete dominance also occurs in animals and humans. For example, hair color, eye color, and skin color traits are determined by multiple alleles in humans.

Detailed explanation-4: -Blending theory is the theory that focuses on blending the characteristics of the parents in the offspring. Thus, it focuses on the concept of incomplete dominance of inheritance. Mendelian inheritance theory, on the other hand, focuses on the complete dominance of characters in the process of inheritance.

Detailed explanation-5: -When none of the factors of a gene is dominant, the phenotype of a heterozygous dominant individual is a blend of dominant and recessive traits. This is called as incomplete dominance. For example, flower colour in Mirabilis jalapa. The red flower is the dominant character and the white flower is recessive character.

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