Mendel: The Father of Genetics and His Laws of Inheritance

What is the probability of getting the gamete ab from the genotype Aabb?

How many kinds of gametes are possible with the genotype AaBB?

A character that appears in the homozygous condition only is called

When two organisms are similar in their external form but differ in their genetic make-up, they are referred as

When a hybrid of F₁ is crossed with the homozygous recessive parent, it is called

Give the appropriate biological or technical term for the following-

The condition in which a pair of chromosomes carries similar alleles of a particular character.

Write one difference between the reciprocal cross and back cross.

Reciprocal cross allows to study the inheritance pattern in offsprings depending on the parental sex.

Define reciprocal cross.

Heterosis is

The cross in which F₁ generation is crossed with the recessive parent is called

Every back cross is a test cross.

The cross between recessive homozygous parents and F₁ individual gives only one type of results, i.e.,

Test cross can be used to preserve the parental phenotype.

Fill in the blank with the correct word given in the bracket.

A test cross is a way to determine whether an organism that expressed a _____ (dominant/recessive) trait was homozygous or heterozygous.

Name the type of cross that would help to find the genotype of a pea plant bearing violet flowers.(Test cross/ Back cross/ Reciprocal cross)

Any gene that produces an effect in the heterozygous condition is called dominant. 

_____ (linkage/mutation/fertilisation) is a phenomenon which results in alteration of DNA sequences and consequently results in changes in the genotype and the phenotype of an organism.

The factors (now known as gene) on chromosomes regulating the characters are called the genotype and the physical expression of the chraracters is called _____.

What is a test cross? Explain the significance of the test cross.