What is an example of homozygous allele pair?
What is an example of homozygous allele pair?
A homozygous brown-eyed person would have the BB gene, while a homozygous blue-eyed person would have the bb gene. An individual has the dominant SS gene, a homozygous gene that results in farsightedness. However, his friend has the homozygous gene ss for the recessive trait, which is normal sight.
What is an example of a heterozygous?
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. The relationship between the two alleles affects which traits are expressed.
What are homozygous genes?
(HOH-moh-ZY-gus JEE-noh-tipe) The presence of two identical alleles at a particular gene locus. A homozygous genotype may include two normal alleles or two alleles that have the same variant.
What is an example homozygous dominant?
A homozygous dominant genotype is one in which both alleles are dominant. For example, in pea plants, height is governed by a single gene with two alleles, in which the tall allele (T) is dominant and the short allele (t) is recessive.
What is an example of a homozygous recessive?
Finally, the genotype of an organism with two recessive alleles is called homozygous recessive. In the eye color example, this genotype is written bb. Of these three genotypes, only bb, the homozygous recessive genotype, will produce a phenotype of blue eyes.
Is EE heterozygous or homozygous?
The individual is homozygous for the trait when it has two identical alleles. In the example above about earlobes, both the EE and ee individuals are homozygous for the trait. The person with the Ee genotype is heterozygous for the trait, in this case, free earlobes.
Is BB a heterozygous or homozygous?
An individual that contains two copies of the same allele for a specific gene is homozygous. An individual that contains two different alleles of a gene is heterozygous. A cow that has two alleles for a red coat is homozygous (bb). A bull with two alleles for a black coat is homozygous (BB).
Is KK a heterozygous or homozygous?
The testcross is another procedure to identify the genotype of a plant. In the testcross the plant in question is crossed with a plant homozygous and recessive for the trait being observed. In the F2 above, hooded plants were either homozygous (KK) or heterozygous (Kk).
Is TT heterozygous?
If an organism has two different alleles ( Tt ) for a certain gene, it is known as heterozygous (hetero- means different)….
| Genotype | Definition | Example |
|---|---|---|
| Heterozygous | One dominant allele and one recessive allele | Tt |
| Homozygous dominant | Two dominant alleles | TT |
What is an example of a homozygous gene?
The following are some examples of homozygous genes: The dominant trait for eye color is brown, represented by BB. All other eye colors – blue, gray, green, and hazel – are recessive traits, represented by bb. A homozygous brown-eyed person would have the BB gene, while a homozygous blue-eyed person would have the bb gene.
How do you know if you are homozygous or heterozygous?
You inherit two alleles for each gene. One comes from your biological mother and one comes from your biological father. If the alleles are identical, you’re homozygous for that specific gene. For instance, it could mean you have two alleles for the gene that causes brown eyes.
What is the difference between homozygous and recessive?
An individual possesses normal vision due to the homozygous VV gene. On the other hand, his friend possesses the recessive vv gene, which results in his colorblindness. Homozygous genes can manifest in certain factors that impact a person’s appearance, including hair and skin.
What is the homozygous gene for hair loss?
A homozygous freckled person would have the FF gene, while someone with the homozygous gene of the individual without freckles would be represented by ff. A full head of hair is a dominant feature, with the homozygous gene of HH. However, the recessive trait – baldness – can be manifested in an individual with the homozygous recessive gene, or hh.
