Samacheer Kalvi solutions for Botany [English] Class 12 TN Board chapter 2 - Classical Genetics [Latest edition]

Extra nuclear inheritance is a consequence of the presence of genes in

In order to find out the different types of gametes produced by a pea plant having the genotype AaBb, it should be crossed to a plant with the genotype

How many different kinds of gametes will be produced by a plant having the genotype AABbCC?

Which one of the following is an example of polygenic inheritance?

In Mendel’s experiments with the garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F₂ generation of the cross RRYY x rryy?

Test cross involves

In pea plants, yellow seeds are dominant to green. If a heterozygous yellow seed pant is crossed with a green seeded plant, what ratio of yellow and green seeded plants would you expect in the F₁ generation?

The genotype of a plant showing the dominant phenotype can be determined by

Select the correct statement from the ones given below with respect to dihydrid cross

Which Mendelian idea is depicted by a cross in which the F₁ generation resembles both the parents

Fruit colour in squash is an example of

In his classic experiments on Pea plants, Mendel did not use

The epistatic effect, in which the dihybrid cross 9:3:3:1 between AaBb Aabb is modified as

In a test cross involving F₁ dihybrid flies, more parental type offspring were produced than the recombination type offspring. This indicates

The genes controlling the seven pea characters studied by Mendel are known to be located on how many different chromosomes?

Which of the following explains how progeny can possess the combinations of traits that none of the parents possessed?

“Gametes are never hybrid”. This is a statement of

Gene which suppresses other genes activity but does not lie on the same locus is called as

Pure tall plants are crossed with pure dwarf plants. In the F₁ generation, all plants were tall. These tall plants of the F₁ generation were selfed and the ratio of tall to dwarf plants obtained was 3:1. This is called

The dominant epistatis ratio is

Select the period for Mendel’s hybridization experiments

Among the following characters which one was not considered by Mendel in his experimentation pea?

Name the seven contrasting traits of Mendel.

What is meant by true-breeding or pure breeding lines/strain?

Give the names of the scientists who rediscovered Mendelism.

What is back cross?

Define Genetics.

What are multiple alleles?

What are the reasons for Mendel’s successes in his breeding experiment?

Explain the law of dominance in a monohybrid cross.

Differentiate incomplete dominance and codominance.

What is meant by cytoplasmic inheritance?

Describe dominant epistasis with an example.

Explain polygenic inheritance with an example.

Differentiate continuous variation with a discontinuous variation.

Explain with an example how single genes affect multiple traits and alleles the phenotype of an organism.

Bring out the inheritance of the chloroplast gene with an example.