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

(1) test cross

(2) dihybrid cross

(3) pedigree analysis

(4) back cross

A common test to find the genotype or hybrid is by :

(1) crossing of one F₂ progeny with male parent

(2) crossing of one F₂ progeny with female parent

(3) studying the sexual behaviour of F₁ progenies

(4) crossing of one F₁ progeny with recessive parent

Test cross involves :

(1) crossing between two geneotypes with recessive trait

(2) crossing between two F₁ hybrids

(3) crossing the F₁ hybrid with a double recessive genotype

(4) crossing between two genotypes with dominant trait

Mating of an organism to a double recessive in order to determine whether it is homozygous or heterozygous for a character under consideration is called

(1) reciprocal cross

(2) test cross

(3) dihybrid cross

(4) back cross

In a pea plants, green pod colour is dominant over yellow pods. 1000 seeds taken from a pea plant on germination produces 760 green pod and 240 yellow pod plants. The parental genotype and phenotype of the seed plant are 

(1) Heterozygous and yellow

(2) heterozygous and green

(3) homozygous and yellow

(4) homozygous and green

A cross between tall pea plant and its recessive parent is known as 

(1) Back cross

(2) Test cross

(3) Recessive cross

(4) Dominant cross

What will be the genotype of parental plants if they produced 25 AA : 48 Aa : 26 aa 

(1) AA and AA

(2) AA and aa

(3) Aa and Aa

(4) aa and aa

Test cross is used to predict the

(1) Phenotype of test organism

(2) Sex of test organism

(3) Genotype of test organism

(4) Genotypic ratio.

A cross was performed between pea plants P1 (violet flower) and P2 (white flower). If obtained progeny showed ratio of 1 (violet) : 1 (white) , then determine the genotype of P1. 

(1) Homozygous recessive

(2) Heterozygous

(3) Homozygous dominant

(4) Can’t be determined

Recessive allele of an enzyme coding gene may be responsible for the production of

(1) The normal/less efficient enzyme

(2) A non-functional enzyme

(3) No enzyme at all

(4) Any of the above.