Home
Class 12
BIOLOGY
A cross in which an organism showing a d...

A cross in which an organism showing a dominant phentype is crossed with the recessive parent in order to know its genotype is called:

A

Back cross

B

Test cross

C

Dihybrid cross

D

Monohybrid cross

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to identify the type of genetic cross being described. The question states that an organism showing a dominant phenotype is crossed with a recessive parent to determine its genotype. ### Step-by-Step Solution: 1. **Understand the Terminology**: - **Dominant Phenotype**: This refers to the observable traits of an organism that are expressed when at least one dominant allele is present. - **Recessive Parent**: This is an organism that has two recessive alleles for a trait, which means it expresses the recessive phenotype. 2. **Identify the Cross Types**: - **Back Cross**: This involves crossing a hybrid offspring (F1 generation) with one of its parents to determine the genotype of the hybrid. - **Test Cross**: This is specifically a cross between an organism with a dominant phenotype and a homozygous recessive organism. The purpose is to determine the genotype of the dominant phenotype organism. - **Dihybrid Cross**: This involves two pairs of contrasting traits (e.g., seed shape and seed color). - **Monohybrid Cross**: This involves a single pair of contrasting traits (e.g., flower color). 3. **Analyze the Question**: - The question specifies that we are crossing an organism with a dominant phenotype with a recessive parent. This aligns with the definition of a test cross. 4. **Conclusion**: - Since the goal is to determine the genotype of the organism with the dominant phenotype by crossing it with a recessive parent, the correct answer is **Test Cross**. ### Final Answer: The type of cross described in the question is called a **Test Cross**. ---
Promotional Banner

Similar Questions

Explore conceptually related problems

Cross between recessive parent and F_(1) hybrid is called :

Test cross is performed to know the genotype. It is cross between

If a true breeding homozygous pea plant with green pod and axial flower as dominant characters is crossed with a recessive homozygous pea plant with yellow pods and terminal flowers, then what would be the: Genotype of the two parents?

If a true breeding homozygous pea plant with green pod and axial flower as dominant characters is crossed with a recessive homozygous pea plant with yellow pod and terminal flowers, then what would be the: Phenotype and genotype of the F_1 offspring?

In which of the following mendelian crosses both dominant and recessive phenotypes will be observed in the progeny?

A gene has two alleles B and b. B is responsible for the expression of character x . b. is responsible for the expression of character y. B. is completely dominant over b. Another gene A is epistatic on gene B. When A is in the dominant condition it suppress the expression of B and b and gives rise to character z.In recessive condition (allele a) allows expression of B and b. When an organism with genotype AaBb is crossed with another organism with genotype AaBb, the ratio of characters x,y and z seen in its offsprings is

Which of the following cross will give recessive progeny in F_(1) generation

If a cross between two plants produces offspring with 50% dominant character (A) and 50% recessive character (a), then the genotype of parents are

A cross between F_(1) hybrid and its homozygous recessive parent is called

A cross between F_(1) hybrid and its homozygous recessive parent is called