PATHOLOGY

PATHOLOGY MCQ

GENETICS AND DISEASE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What do you call the non-Mendelian inheritance pattern where neither trait is dominant and the traits appear to blend together in heterozygous individuals?
A
Codominance
B
Incomplete dominance
C
Polygenic traits
D
None of the above
Explanation: 

Detailed explanation-1: -In codominance, neither allele is dominant over the other, so both will be expressed equally in the heterozygote.

Detailed explanation-2: -Incomplete dominance is a non-Mendelian inheritance pattern. It states that neither trait is dominant. The traits appear to blend together.

Detailed explanation-3: -Codominance. As opposed to partial dominance, codominance occurs when the phenotypes of both parents are simultaneously expressed in the same offspring organism.

Detailed explanation-4: -Codominance. Codominance happens when both the alleles get expressed equally in the heterozygote phenotype. The phenotype of the offspring is a combination of the phenotype of the parents. Thus, the trait is neither dominant nor recessive.

Detailed explanation-5: -Pleiotropy. Some genes affect more than one phenotypic trait. This is called pleiotropy . There are numerous examples of pleiotropy in humans.

There is 1 question to complete.