What is homozygous dominant symbol?

Is TT homozygous dominant?

An organism can be either homozygous dominant ( TT ) or homozygous recessive ( tt ). If an organism has two different alleles ( Tt ) for a certain gene, it is known as heterozygous (hetero- means different).

Is GG homozygous dominant?

An organism that has an identical pair of alleles for a trait is called homozygous. … Organisms that have two different alleles for a gene are called heterozygous (Gg). The offspring of the cross between the GG (homozygous dominant) and gg (homozygous recessive) plants are all heterozygous for the pod color gene.

What letters are homozygous dominant?

A homozygous trait is referred to by two capital letters (XX) for a dominant trait, and two lowercase letters (xx) for a recessive trait.

What heterozygous dominant?

When you’re heterozygous for a specific gene, it means you have two different versions of that gene. The dominant form can completely mask the recessive one, or they can blend together. In some cases, both versions appear at the same time. The two different genes can interact in various ways.

Is QQ dominant or recessive?

The gene for hair color in rabbits has two alleles Q and q. Q is dominant and codes for brown hair. q is recessive and codes for white hair.

Is HH heterozygous dominant?

For both heterozygous individuals (Hh), the gametes can carry the H (dominant allele) or the h (recessive allele). … For HH, the gametes can only carry H (the dominant allele).

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Is TT a purebred?

The result of this cross was all tall hybrid pea plants (Tt). When these second-generation plants were crossed, the result was one tall (TT) purebred; two tall (Tt) hybrids; and one short (tt) purebred. Mendel concluded that tallness in pea plants was dominant, and became the expressed trait, (uppercaseT).

Is TT dominant?

What is the phenotype of a pea plant that is homozygous dominant (TT) for the tall trait?

Genotype and Phenotype.

Genotype Definition Example
Heterozygous One dominant allele and one recessive allele Tt
Homozygous dominant Two dominant alleles TT
Homozygous recessive Two recessive alleles tt