TN State Board Samacheer Kalvi Online Test for 12th Std - Bio Botany - English - Classical Genetics

Question 1 Of 10

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

Flowering position seed colour pod length Seed shape

Question 2 Of 10

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

Flower colour in Mirabilis jalapa production of male honey bee Pod shape in garden pea Skin colour in humans

Question 3 Of 10

The dominant epistatis ratio is

9:3:3:1 12:3:1 9:3:4 9:6:1

Question 4 Of 10

Select the period for Mendel’s hybridiza tion experiments

1856 -1863 1850 -1870 1857 – 1869 1870 – 1877

Question 5 Of 10

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

Stem – Tall or dwarf Trichomal glandular or non – glandular Seed – Green or yellow Pod – Inflated or constricted

Question 6 Of 10

Extra nuclear inheritance is a consequence of presence of genes in

Mitrochondria and chloroplasts Endoplasmic reticulum and mitrochondria Ribosomes and chloroplast Lysososmes and ribosomes

Question 7 Of 10

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

Dominance of one allele on another allele of both loci Interaction between two alleles of different loci Dominance of one allele to another allele of same loci Interaction between two alleles of some loci

Question 8 Of 10

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

aaBB AaBB AABB aabb

Question 9 Of 10

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

law of segregation Chromosome theory Law of independent assortment Polygenic inheritance

Question 10 Of 10

“Gametes are never hybrid” This is a statement of

Law of dominance Law of independent assortment law of segregation Law of random fertilization

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 12th Standard Bio Botany - English Medium - Classical Genetics

Samacheer Kalvi 12th Bio Botany - Classical Genetics - Book Back Questions in English Medium