31. The longer the chromosome of an organism, the more genetic variability it gets from,
32. Which statement is incorrect about linkage ?
A. It helps in maintaining the valuable traits of new varieties.
B. It helps in forming new recombinants.
C. Knowledge of linkage helps the breeder to combine all desirable traits in a single variety.
D. It helps in locating genes on chromosome.
Answer : Option B
33. Genetic balance theory for sex determination in Drosophila was proposed by
34. In Bonellia all larva are genetically and cytologically similar. In this worm mole individuals live inthe uterus of female. If a particular larva settle near proboscis of an adult female, it becomes a male individuals. Larva develops free in water it becomes.
A. Male individuals
B. Female individuals
C. Inter Sex
D. Super female
Answer : Option B
35. F2 generation is produced as a result of
A. Crossing F1 individuals with dominant parent
B. Crossing F1 individuals with recessive parent
C. Crossing one of the parental individual with dominant individual.
D. Crossing F1 individuals amongst them selves.
Answer : Option D
36. Segregation of genes take place during which phase of cell division ?
37. A couple has four daughters. The percentage probability of fifth child to be a Daughter is.
38. In human being sex chromosomal complement is
39. Zea mays has 10 pairs of chromosomes . Linkage groups present in it are
40. Crossing over during meiosis occurs between
A. sister chromatids
B. Non sister chromatids
C. Centromeres
D. Non homologous chromosomes
Answer : Option B