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What is a group of organisms with exactly the same genes called?

What is a group of organisms with exactly the same genes called?

An organism in which the two copies of the gene are identical — that is, have the same allele — is called homozygous for that gene. An organism which has two different alleles of the gene is called heterozygous.

How can two organisms have the same genotype but different phenotype?

Due to the presence of a dominant allele, the same phenotype but distinct genotype is possible. On both homologous chromosomes, a person can have a dominant allele, while another person may have a single dominant allele and a corresponding recessive allele.

Do organisms that have identical DNA always share a common phenotype?

Abstract. Human monozygotic twins and other genetically identical organisms are almost always strikingly similar in appearance, yet they are often discordant for important phenotypes including complex diseases.

What is phenotype example?

Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.

What are the 3 types of genotypes?

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 are 2 examples of genotypes?

Genotype examples The brown allele is dominant (B), and the blue allele is recessive (b). If the child inherits two different alleles (heterozygous) then they will have brown eyes. For the child to have blue eyes, they must be homozygous for the blue eye allele.

Can As marry SC?

The most common of these pieces of advice is for carriers of the Sickle gene (AS, SS, SC) not to marry fellow carriers of the Sickle gene. Thus, people with AS, SS and SC genotype are advised to marry only people who have the AA genotype to avoid the possibility of having SS babies.

Can an AA marry an SS?

An AA genotype person marrying an SS can only result in AS children. Someone with the genotype AS should only marry someone with the genotype AA because if AS marries another AS there’s one out of 4 chances (AS, AS, AA and SS) that they will have a child with the sickle-cell disease.

Is AA compatible with AS?

Compatible genotypes for marriage are: AA marries an AS. You’ll end up with kids with AA and AS which is good. But sometimes if you’re not lucky all the kids will be AS which limits their choice of partner. AS and AS should not marry, there is every chance of having a child with SS.

What is the blood group of AA genotype?

Blood Type Look-Up Tables

Mother’s Blood Type Possible Mother’s Genotype Father’s Blood Type
A AA, AO A
A AA, AO AB
A AA, AO B
A AA, AO O

Which blood group is not good for marriage?

Compatibility in blood group is only a concern for couples if a pregnancy is involved where both partners are the biological parents. That’s because of RH factor. Rh factor is an inherited protein, so being Rh negative (-) or Rh positive (+) is determined by your parents. The most common type is Rh positive.

What blood type Cannot have babies?

ABO incompatibility can occur only if a woman with type O blood has a baby whose blood is type A, type B, or type AB. If a baby is type O there won’t be a problem with a negative immune response because type O blood cells don’t have immune-response triggering antigens.

Which blood type is most intelligent?

AB

Which blood type is rarest?

AB negative

What is the original blood type?

There are four main blood types. Blood type A is the most ancient, and it existed before the human species evolved from its hominid ancestors. Type B is thought to have originated some 3.5 million years ago, from a genetic mutation that modified one of the sugars that sit on the surface of red blood cells.

What is the difference between O negative and O positive blood?

They also label them as either rhesus (Rh) positive or Rh negative to denote the presence or absence of an antigen called Rh factor. For example, a person with O+ blood does not have A or B antigens on the surface of the cells but does have Rh factor. In contrast, O- blood has no A or B antigens and no Rh factor.

What is special about blood type O negative?

O negative blood can be used in transfusions for any blood type. Type O is routinely in short supply and in high demand by hospitals – both because it is the most common blood type and because type O negative blood is the universal blood type needed for emergency transfusions and for immune deficient infants.

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