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

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

What will be the ratio of homozygous dominant, homozygous recessive and pure heterozygous traits in F₂ generation in pea plant is

(1) 1 : 1 : 8

(2) 2 : 3 : 2

(3) 1 : 1 : 2

(4) 2 : 2 : 6

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

Select the correct statement

When a violet flower of unknown genotype is crossed with white flower, the progenies are violet and
white in equal proportion. Then read the following statements : 

(i) This is called test cross.
(ii) Unknown flower is homozygous
(iii) Unknown flower is heterozygous
(iv) This test used to determine the phenotype of the plant at F2
(v) In test cross, violet or white flower is crossed with the recessive parent instead of self-crossing.

Select the incorrect statement.

1. iii, iv, v

2. ii, iv

3. i, ii, v

4. ii, iv, v