AP BIOLOGY

HEREDITY

CODOMINANCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is an example of a gene with more than 2 alleles (multiple alleles)?
A
Roan Animals
B
Spotted Chickens
C
Blood Type
D
Snapdragon Flower Color
Explanation: 

Detailed explanation-1: -Traits controlled by a single gene with more than two alleles are called multiple allele traits. An example is ABO blood type. Your blood type refers to which of certain proteins called antigens are found on your red blood cells.

Detailed explanation-2: -The most common examples of multiple alleles are the coat colour of rabbits, A, B, AB and O blood groups in humans and the eye colour in Drosophila.

Detailed explanation-3: -Typically, there are only two alleles for a gene in a diploid organism. When there is a gene existing in more than two allelic forms, this condition is referred to as multiple allelism.

Detailed explanation-4: -An excellent example of multiple allele inheritance is human blood type. Blood type exists as four possible phenotypes: A, B, AB, & O. There are 3 alleles for the gene that determines blood type. (Remember: You have just 2 of the 3 in your genotype—1 from mom & 1 from dad).

Detailed explanation-5: -Multiple allelism, on the other hand, occurs when more than two gene forms exist for the same locus. For example, one allele of the gene-producing height can be tall, while the other allele can be dwarf. It simply indicates that for a given gene, three or more alleles are present in the population.

There is 1 question to complete.