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).
Which genotype is a homozygous dominant?
An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype. In our example, this genotype is written Bb.
Is the genotype TT?
If an organism has two different alleles (Tt) for a certain gene, it is known as heterozygous (hetero means different).
Test Your Knowledge.
|Heterozygous||One dominant allele and one recessive allele||Tt|
|Homozygous dominant||Two dominant alleles||TT|
What is the phenotype of genotype TT?
The phenotype of a plant with the genotype Tt would be tall. Here tallness (T) is a dominant trait over dwarfness (t), which is recessive.
What heterozygous dominant?
The term “heterozygous” also refers to a pair of alleles. 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.
Is TT a gamete?
Explanation: The parental diploid genotypes, such as TT and Tt will be separated into haploid gametes during meiosis. … So in regard to the Tt genotype, the parent organism will produce two different types of gametes, T and t .
Why is a plant with genotype TT referred to as heterozygous?
Answer: because it has two different allele.
Is DD homozygous or heterozygous?
Sally’s genotype is “dd”, so she is also considered homozygous. Susan’s genotype is “Dd”, so she is considered HETEROZYGOUS (has two different alleles for a specific gene). Although Susan has both the allele “D” to make dimples and the allele “d” in her genotype, her phenotype is the presence of dimples.