How many types of genotypes are there?

A description of the pair of alleles in our DNA is called the genotype. Since there are three different alleles, there are a total of six different genotypes at the human ABO genetic locus. The different possible genotypes are AA, AO, BB, BO, AB, and OO.

What are the 3 types of genotypes?

There are three types of genotypes: homozygous dominant, homozygous recessive, and hetrozygous.

What are 5 examples of genotypes?

Examples of Genotype:

  • Height. For an individual’s gene makeup there is tall variety (T) and there is short variety (s). T and s are called the alleles. …
  • Freckles or no freckles. Again the information that is passed from parent to child is carried in the cell of the genotype. …
  • Lactose intolerance.

What is genotype and its types?

There are three available genotypes, PP (homozygous dominant ), Pp (heterozygous), and pp (homozygous recessive). … Other types of genetic marker, such as microsatellites, can have more than two alleles, and thus many different genotypes.

What are 2 examples of genotypes?

Other examples of genotype include: Hair color. Height. Shoe size.

Genotype examples

  • A gene encodes eye color.
  • In this example, the allele is either brown, or blue, with one inherited from the mother, and the other inherited from the father.
  • The brown allele is dominant (B), and the blue allele is recessive (b).
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What are the 4 blood types and their genotypes?

ABO Blood Types

  • Type A: The genotype is either AA or AO. The antigens on the blood cell are A and the antibodies in the blood plasma are B.
  • Type B: The genotype is either BB or BO. The antigens on the blood cell are B and the antibodies in the blood plasma are A.
  • Type AB: The genotype is AB. …
  • Type O: The genotype is OO.

What does genotype AA mean?

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”.

Can AA and SS marry?

AC is rare whereas AS and AC are abnormal. Compatible genotypes for marriage are: AA marries an AA. … And definitely, SS and SS must not marry since there’s absolutely no chance of escaping having a child with the sickle cell disease.

How do I know my genotype?

Sometimes a genetic test will give you your genotype. Sometimes you just need a bit of genetic luck in your family tree to figure it out. And sometimes you can tell the two genotypes apart just by looking at someone. An obvious way to figure out you genotype is to have a genetic test done.

What is the sickness of AA genotype?

Children with genotype AA (92.3%) were more susceptible to malaria parasite than AS (5.1%) and SS (2.6%). The association of haemoglobin genotype with malaria was highly significant (p<0.001).

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What is EE genotype?

The person with the Ee genotype is heterozygous for the trait, in this case, free earlobes. An individual is heterozygous for a trait when it has two different allelic forms of a particular gene. The heterozygous individual received one form of the gene from one parent and a different allele from the other parent.

Can As marry as?

However, AS and AS should not marry because there is every chance of having a child with Sickle Cell Disease, while AS and SS shouldn’t think of marrying. And definitely, SS and SS must not marry since there’s absolutely no chance of escaping having a child with the sickle cell disease.

Is DNA a genotype?

Genotype, very simply, is the version of a DNA sequence that an individual has. There’s a large amount of DNA that we all have in common–of course, that’s why we’re all humans–but there’s also a large amount of variation in sequence among individuals.

Is BB a genotype or phenotype?

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.

Is hair color a genotype?

The best-studied hair-color gene in humans is called MC1R. This gene provides instructions for making a protein called the melanocortin 1 receptor, which is involved in the pathway that produces melanin.

Is hair color determined by genetics?

Hair color Type and amount of melanin
Red Mostly pheomelanin with a little eumelanin
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