TN State Board Samacheer Kalvi Online Test for 11th Std - Biology - English - Classical Genetics

Question 1 Of 10

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

9:1 1:3 3:1 50:50

Question 2 Of 10

Select the period for Mendel’s hybridiza tion experiments

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

Question 3 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 4 Of 10

Test cross involves

Crossing between two genotypes with a recessive trait Crossing between two F1 hybrids Crossing the F1 hybrid with a double recessive genotype Crossing between two genotypes with dominant trait

Question 5 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

Question 6 Of 10

Fruit colour in squash is an example of

Recessive epistasis Dominant epistasis Complementary genes Inhibitory genes

Question 7 Of 10

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

Only round seeds with green cotyledons Only wrinkled seeds with yellow cotyledons Only wrinkled seeds with green cotyledons Round seeds with yellow cotyledons and wrinkled seeds with yellow cotyledons

Question 8 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 9 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 10 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

Tamil Nadu State Board ( Samacheer Kalvi ) Online Test based on Book Back Questions - 11th Standard Biology - English Medium - Classical Genetics

Samacheer Kalvi 11th Biology - Classical Genetics - Book Back Questions in English Medium