|Heterozygous||One dominant allele and one recessive allele||Tt|
|Homozygous dominant||Two dominant alleles||TT|
Is TT a hybrid genotype?
If the two alleles are the same (TT or tt), the genotype is considered purebred. If the two alleles are different (Tt), the genotype is considered hybrid. This example shows the inheritance of a single characteristic (height). A cross that shows the inheritance of a single characteristic is known as a monohybrid cross.
What is an example of a heterozygous trait?
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.
Is a carrier heterozygous or homozygous?
Carriers are always heterozygous. People with CF are homozygous recessive. Since Huntington’s disease is autosomal dominant, people with the disease can be either homozygous dominant or heterozygous.
Is TT purebred?
In the first of Mendel’s experiments, a tall purebred pea plant (TT) was crossed with a short purebred pea plant (tt). The result of this cross was all tall hybrid pea plants (Tt).
Is BB purebred or hybrid?
No, AA/bb is a pure-bred genotype, but Aa/Bb is a hybrid genotype. The possible genotypes of the pure-bred plants are AA/bb and aa/BB. Shull found that when he crossed the two pure-breds, the offspring grew much better.
Is FF purebred or hybrid?
Wilma is believed to be heterozygous for her round eye shape, while Wilbur’s family brags that they are a pure line.
What are the symptoms of heterozygous?
Signs and symptoms of heterozygous FH in adults include the following:
- Long-standing history of severe hypercholesterolemia dating back to childhood.
- If no previous acute coronary event, symptoms consistent with ischemic heart disease, especially in the presence of other cardiovascular risk factors (especially smoking)
What does it mean to be heterozygous for a disease?
A person with one abnormal gene is called heterozygous for that gene. If a child receives an abnormal recessive disease gene from both parents, the child will show the disease and will be homozygous (or compound heterozygous) for that gene. GENETIC DISORDERS. Almost all diseases have a genetic component.