Does homozygous mean dominant or recessive?
Homozygous means that the organism has two copies of the same allele for a gene. An organism can be homozygous dominant, if it carries two copies of the same dominant allele, or homozygous recessive, if it carries two copies of the same recessive allele.
What traits were homozygous dominant?
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. Curly hair is a dominant trait, with the homozygous HH gene causing the condition.
Is heterozygous a dominant trait?
Difference between homozygous and heterozygous
Unlike homozygous, being heterozygous means you have two different alleles. You inherited a different version from each parent. In a heterozygous genotype, the dominant allele overrules the recessive one. Therefore, the dominant trait will be expressed.
What does it mean to have a homozygous trait?
Homozygous is a genetic condition where an individual inherits the same alleles for a particular gene from both parents.
Can heterozygous be recessive?
If the alleles are heterozygous recessive, the faulty allele would be recessive and not express itself. Instead, the person would be a carrier. If the alleles are heterozygous dominant, the faulty allele would be dominant.
How do you know if a dominant trait is homozygous or heterozygous?
To identify whether an organism exhibiting a dominant trait is homozygous or heterozygous for a specific allele, a scientist can perform a test cross. The organism in question is crossed with an organism that is homozygous for the recessive trait, and the offspring of the test cross are examined.
What is an example of a 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.
How do you know if a trait is dominant or recessive?
Determine whether the trait is dominant or recessive.
If the trait is dominant, one of the parents must have the trait. Dominant traits will not skip a generation. If the trait is recessive, neither parent is required to have the trait since they can be heterozygous.