Individuals who are homozygous dominant (DD) or heterozygous (Dd) are Rh+. Those who are homozygous recessive (dd) are Rh- (i.e., they do not have the key Rh antigens). Clinically, the Rh factor, like ABO factors, can lead to serious medical complications.
Is Blood Type AA heterozygous or homozygous?
Answer: To calculate the allele frequencies for A and B, we need to remember that the individuals with type A blood are homozygous AA, individuals with type AB blood are heterozygous AB, and individuals with type B blood are homozygous BB.
Which of the following genotypes is homozygous dominant?
The correct answer: The genotype which shows the character of homozygous dominant is D. SS.
What are homozygous dominant?
Homozygous means that the organism has two copies of the same allele for a gene. An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele.
Which blood type is heterozygous dominant?
ABO Blood Types
The A and B alleles are dominant to the O allele. When both inherited alleles are O, the genotype is homozygous recessive and the blood type is O. When one of the inherited alleles is A and the other is B, the genotype is heterozygous and the blood type is AB.
Which blood type can be homozygous?
We all know about the ABO blood group system which has three alleles and gives rise to six genotypes but only four phenotypes (the four blood groups): A, B, AB, and O. The A and B blood group individuals can be either homozygous or heterozygous.
Which blood type is dominant?
ABO Blood Type
The A and B genes are dominant and the O gene is recessive. For example, if an O gene is paired with an A gene, the blood type will be A.
What is a homozygous recessive genotype?
A homozygous recessive allele combination contains two recessive alleles and expresses the recessive phenotype. … A homozygous plant contains either of the following alleles for seed shape: (RR) or (rr). The (RR) genotype is homozygous dominant and the (rr) genotype is homozygous recessive for seed shape.
Is AA Heterozygous dominant?
Two dominant alleles (AA) or two recessive alleles (aa) are homozygous. One dominant allele and one recessive allele (Aa) is heterozygous.
What is homozygous and heterozygous genotypes?
Heterozygous refers to having inherited different forms of a particular gene from each parent. A heterozygous genotype stands in contrast to a homozygous genotype, where an individual inherits identical forms of a particular gene from each parent.
What is an example of heterozygous genotype?
Together, these alleles are called a genotype. If the two versions are different, you have a heterozygous genotype for that gene. For example, being heterozygous for hair color could mean you have one allele for red hair and one allele for brown hair.
Which represents the genotype of a homozygous condition?
The genotype is represented by letter combinations, such as TT , Tt , and tt . When an organism has two of the same alleles for a specific gene, it is homozygous (homo- means “same”) for that gene. An organism can be either homozygous dominant ( TT ) or homozygous recessive ( tt ).
What is the genotype for heterozygous blood type B?
Explanation: Gene has heterozygous type B blood. The genotype of Gene will be IBIb .
Is PP homozygous or heterozygous?
There are three available genotypes, PP (homozygous dominant ), Pp (heterozygous), and pp (homozygous recessive). All three have different genotypes but the first two have the same phenotype (purple) as distinct from the third (white).
What’s the difference between Rh+ and Rh?
Those with Rh negative factor will produce the antibodies. Therefore, someone with Rh+ blood can receive both Rh+ and Rh- transfusions, but those with Rh- can only receive Rh- blood. Blood type and Rh factor screening are done not only to categorize a blood donation.