Can AA and AA produce as?

Can AA and AA genotype give birth to AS? – Quora. No, one or both of the parents would have to have an AS or SS genotype. SCD denotes all genotypes containing at least one sickle gene, in which HbS makes up at least half the hemoglobin present.

What is hemoglobin phenotype AA?

If a person inherits a Hemoglobin A gene from each parent (AA), that person will have normal hemoglobin. This discussion is related to two of the possible changes in normal hemoglobin: Hemoglobin S and Hemoglobin C. AA = Normal Hemoglobin.

Is AA a sickle cell?

There are four hemoglobin genotypes (hemoglobin pairs/formations) in humans: AA, AS, SS and AC (uncommon). SS and AC are the abnormal genotypes or the sickle cells. We all have a specific pair of these hemoglobin in our blood which we inherited from both parents.

How does genotype become phenotype?

Genotype & Phenotype. Definitions: phenotype is the constellation of observable traits; genotype is the genetic endowment of the individual. Phenotype = genotype + development (in a given environment). In a narrow “genetic” sense, the genotype defines the phenotype.

Can a person’s genotype be determined by their phenotype explain?

No, a person’s genotype cannot be determined solely by their phenotype as many genes in our genome do not get expressed.

What does it mean to have AA genotype?

The term “homozygous” is used to describe the pairs “AA” and “aa” because the alleles in the pair are the same, i.e. both dominant or both recessive. In contrast, the term “heterozygous” is used to describe the allelic pair, “Aa”.

What are the chances of passing on sickle cell trait?

If both parents have sickle cell trait (HbAS) there is a one in four (25\%) chance that any given child could be born with sickle cell anaemia. There is also a one in four chance that any given child could be completely unaffected. There is a one in two (50\%) chance that any given child will get the sickle cell trait.

Can a child have sickle cell trait if neither parent has it?

Your child would have to inherit two sickle cell genes to have sickle cell disease. So if your child’s father does not have the sickle cell gene, your child can’t get sickle cell disease. But if your child’s father has the sickle cell gene, your child can get sickle cell disease.

Are phenotypes inherited?

The sum of an organism’s observable characteristics is their phenotype. A key difference between phenotype and genotype is that, whilst genotype is inherited from an organism’s parents, the phenotype is not.

Can you change your phenotype?

The phenotype may change constantly throughout the life of an individual because of environmental changes and the physiological and morphological changes associated with aging. The interplay between genotype and phenotype is remarkably complex, however.