Can two people have the same genotype?

Unless you’re an identical twin, your genotype is completely unique. … Identical twins, however, share the exact same genotype, which is what makes them identical.

Can genotypes be the same?

If both alleles are the same, the genotype is referred to as homozygous. If the alleles are different, the genotype is referred to as heterozygous. Genotype contributes to phenotype, the observable traits and characteristics in an individual or organism.

Can two people have the same genetics?

The possibility of having a secret DNA sharing twin is pretty low. Your DNA is arranged into chromosomes, which are grouped into 23 pairs. … Theoretically, same-sex siblings could be created with the same selection of chromosomes, but the odds of this happening would be one in 246 or about 70 trillion.

How could two people with the same genotype have a different phenotype?

Mandira P. Same phenotype but different genotype is possible due to presence of dominant allele. … A person can have a dominant allele on both the homologous chromosomes (i.e. in double dose) while another person may have single dominant allele and a corresponding recessive allele.

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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.

Can a genotype change?

Genotype generally remains constant from one environment to another, although occasional spontaneous mutations may occur which cause it to change. However, when the same genotype is subjected to different environments, it can produce a wide range of phenotypes.

Can twins have different genotype?

About one-third of twins are monozygotic twins. … The result is dizygotic or fraternal twins. These two individuals share the same amount of genetic material as would any two children from the same mother and father. In other words, they possess a different genotype and phenotype.

Do all sperm cells have same DNA?

Each sperm cell contains half the father’s DNA. But it’s not identical from sperm to sperm because each man is a mixture of the genetic material from his parents, and each time a slightly different assortment of that full DNA set gets divided to go into a sperm.

Can siblings have same DNA?

Siblings share much of the same DNA, but recombination explains why it is possible for siblings to have different DNA mixtures that give each their distinct look. … Full Siblings: Each child with the same biological mother and father inherits an estimated 50% of DNA from each parent, but not the exact same half.

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How could two individuals with the exact same genotype identical twins have a different phenotype?

Identical or monozygotic twins occur when a single egg is fertilised to form 1 zygote that divides into 2 separate embryos. As a result, identical twins share identical DNA but may show differences in their phenotype due to environmental factors.

Is it possible that same genotype has different phenotype?

Due to the presence of a dominant allele, the same phenotype but distinct genotype is possible. A dominant allele always expresses itself when it is present in the genotype. … A dominant allele is a variation of a gene that, even in the presence of other alleles, will produce a certain phenotype.

Why don t similar genotypes produce the same phenotype?

Why don’t similar genotypes always produce the same phenotype? Animals display different phenotypes dependent on diet, not genotype. … the allele’s frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change.

Which genotype has the strongest immunity?

The GG genotype of SP induced stronger immune responses than those of the other two genotypes in the pattern recognition molecule and immune-responsive effector pathways. These findings demonstrated the population variations of RSV during the circulation between the vector insect and host plant.

What genotype can marry each other?

Health Tips

  • Types of Genotype. The genotypes in humans are AA, AS, AC, SS. They refer to the hemoglobin gene constituents on the red blood cells. …
  • Compatible genotypes for marriage are: AA marries an AA. That’s the best compatible. …
  • Solution. The only thing that can change the genotype is the bone marrow transplant (BMT).
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What are the 3 types of genotypes?

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