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What does it mean if an organism is homozygous?
An organism is considered homozygous when it has two identical alleles for a specific gene, one inherited from each parent. This means that both alleles express the same trait, whether dominant or recessive. For example, if an organism has two alleles for blue eyes (bb), it is homozygous for that trait. In contrast, heterozygous organisms possess two different alleles for a gene.
What does it mean that an organism is homozygous dominant for a trait?
Homozygous Dominant for a trait means that an organism has two dominant alleles for that trait. Here's an example: Trait: Widow's Peak Widow's Peak allele: Dominant (D) No widow's peak allele: Reccessive(d) Homozygous Dominant (DD) Homozygous Reccessive (dd) Heterozygous (Dd)
What does it mean when a trait is recessive?
The principle of excessiveness is defined as the explanation of why one trait will not show over another. If a trait is recessive it will not show when a dominant trait is present.
What is arecessive trait?
A recessive trait is a genetic trait that is only expressed when an individual carries two copies of the gene responsible for that trait. It is masked by the presence of a dominant trait when an individual carries one copy of each type of gene.
Is it possible for there to be recessive homozygous alleles?
Yes - recessive alleles can be eliminated from the gene pool. However, heterozygous individuals (those with one recessive allele) are harder to identify if the allele is recessive, so if talking about artificial (selective) breeding, the process may take some time.
What does it mean to be homozygous dominant heterozygous or homozygous recessive?
Homozygous means "same" so a homozygous recessive trait would be a same [with parents] trait that is not the stronger trait which is dominant. Dominant is stronger showing trait, recessive is weaker trait. If you are dealing with Punnett squares then tt is homozygous recessive and TT is homozygous dominant. Hope this helped...
Is AA a homozygous genotype?
homozygous = AA & AA Heterozygous = Aa
What does it mean if an organism is homozygous?
An organism is considered homozygous when it has two identical alleles for a specific gene, one inherited from each parent. This means that both alleles express the same trait, whether dominant or recessive. For example, if an organism has two alleles for blue eyes (bb), it is homozygous for that trait. In contrast, heterozygous organisms possess two different alleles for a gene.
What does homo recessive mean?
"Homozygous recessive" means having two copies of a recessive allele for a particular gene. This usually results in the expression of the recessive trait.
What does it mean that an organism is homozygous dominant for a trait?
Homozygous Dominant for a trait means that an organism has two dominant alleles for that trait. Here's an example: Trait: Widow's Peak Widow's Peak allele: Dominant (D) No widow's peak allele: Reccessive(d) Homozygous Dominant (DD) Homozygous Reccessive (dd) Heterozygous (Dd)
What does reccesive trait mean?
A recessive trait is one that will only be expressed when in the presence of two recessive alleles.
What does it mean when a trait is recessive?
The principle of excessiveness is defined as the explanation of why one trait will not show over another. If a trait is recessive it will not show when a dominant trait is present.
Which term mean the state of having two identical alleles for the same trait?
Homozygous.
What are traits that are hidden called?
Recessive traits can be hidden if the organism inherits one dominant and one recessive allele (i.e. is heterozygous) for a gene. If a heterozygous organism mates with another heterozygous organism for the same trait, the recessive trait may be expressed in their offspring, which would mean that the offspring inherited two recessive alleles, one from each parent.
What does it mean to be homozygous for a trait?
both chromosomes from your parents are the same
What is arecessive trait?
A recessive trait is a genetic trait that is only expressed when an individual carries two copies of the gene responsible for that trait. It is masked by the presence of a dominant trait when an individual carries one copy of each type of gene.
Why is it possible that a majority of people may display a recessive trait?
It is possible for many people to display a recessive trait because the people have two recessive genes. Dominant simply means it will trump a recessive gene, it does not mean it is the most widely seen gene in a species.
