Heredity assignment @Class X

Q 1  who is the father of Genetics?

Q 2  Which plant did Mendel choose for his studies ? Give at least four reasons for the same.

Q 3 Define the following terms dominant trait,  Recessive trait, Homozygous condition, Heterozygous condition, Allele, Monohybrid cross, Dihybrid cross, Phenotype, and Genotype.

HOTS

Q 4 If a purple-flowered pea plant is crossed with white-flowered pea plant and all the plants in the F1 generation were purple.

(a) Write the genotype of parents, F1 & F2

(b) write the phenotypic and genotypic ratio of F2

(c) which law is valid in F1 & F2  separately.

(d)show the flow diagram

Q5Show a cross to prove that there is a 50% chance of every trait to be inherited from either of parents.(name the underlying law)

Q6 If a tall pea plant is crossed with the dwarf plant, 25 % plants in the F2 were found dwarf after the progeny of F1 was self crossed. Illustrate the cross by flow chart and justify the reason for the finding.