NEET BIOLOGY

REPRODUCTION

REPRODUCTION IN ORGANISMS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following genotypes is homozygous dominant?
A
A
B
Aa
C
AA
D
aa
Explanation: 

Detailed explanation-1: -The correct answer: The genotype which shows the character of homozygous dominant is D. SS.

Detailed explanation-2: -Offspring whose genotype is either AA or Aa will have the dominant trait expressed phenotypically, while aa individuals express the recessive trait.

Detailed explanation-3: -An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb.

Detailed explanation-4: -As carriers, you and your mate are both heterozygous (Aa). This disease only afflicts those who are homozygous recessive (aa).

Detailed explanation-5: -Individuals that are homozygous have the same allele. They can be homozygous dominant, with two dominant “A” alleles, or homozygous recessive, with two recessive “a” alleles. They can also be heterozygous, meaning they have two different alleles for that gene. This is typically shown as “Aa."

There is 1 question to complete.