0
In a testcross an organism with a dominant phenotype but unknown genotype is crossed with what to establish its genotype?
Wiki User
∙ 11y ago
homozygous recessive
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Breeding an individual of dominant phenotype with a homozygous recessive individual to determine the individuals genotype?
testcross
To perform a testcross scientists cross an organism with an unknown genotype with a organism.?
If an individual is of the dominant phenotype, its genotype can be either AA or Aa (letter A picked for demonstration's sake). To do a good test cross, we have to be able to unambiguously tell which one of the genotypes the individual is. The best test cross would be conducted with a homozygous recessive (aa) individual. This way, if the cross generates 100% dominant phenotype, then the original individual was homozygous dominant. If the cross generates 50% dominant and 50% recessive phenotype, then the original individual was heterozygous.
What phenotype is produced by AB genotype?
The genotype AA represents a homozygous dominant genotype. The capital letter "A" represents the dominant allele, while the lowercase letter "a" would represent the recessive allele. If both dominant alleles are present in a genotype (homozygous dominant) then the phenotype is "A" phenotype. If one dominant allele and one recessive allele are present (heterozygous dominant) then the phenotype is "A". Finally, if both recessive alleles "a" are present (homozygous recessive) then the phenotype is "a". Therefore, the answer to your question is the genotype AA would result in an "A" phenotype because the genotype is homozygous dominant.
What phenotype is produced by AA genotype?
If A represents a dominant allele, then the AA genotype would produce the dominant phenotype.
Is it possible to determine the genotype of a plant with a dominant phenotype the trait?
NO, because a dominant phenotype could either be homozygous or a heterozygous.so unless you are sure about the genotype of parents we can't determine it...but we can determine the genotype of a person showing reccessive phenotype, as a recessive trait always expresses itself in a homozygous condition..Read more: Is_it_possible_to_determine_the_genotype_of_a_person_showing_a_dominant_phenotype
How can you determine the genotype of a plant that displays the dominant of a trait?
Do a testcross with a homozygous recessive plant.
How can you determine the genotype of a plant that dominant form of a trait?
Do a testcross with a homozygous recessive plant.
What is a testcross?
Gregor Mendel devised the fundamental tool of the test cross. It is an experimental cross of an individual organism of dominant phenotype but unknown genotype and an organism with a homozygous recessive genotype .
How can you determine the genotype of a plant that displays the dominant form a trait?
Do a testcross with a homozygous recessive plant.
How can you determine the genotype of a plant that display the dominant form of a trait?
Do a testcross with a homozygous recessive plant.
How can determine the genotype of a plant that displays the dominant form of a trait?
Do a testcross with a homozygous recessive plant.
How can you determine the genotype plant that displays the dominant form of a trait?
Do a testcross with a homozygous recessive plant.
