51. When there is no Possibility of independent assortment of genes during gametogenesis then What Will be the real ratio of F2 in dihybrd cross?
52. What was the expected ratio of F2 by Bateson and Punnet in their dihybridization experiment done on Lathyruas odoratus?
53. What is incorrect statement Gynandromorphs ?
A. Individuals who show male characters and female characters
B. Individuals who show only female characters
C. It happens due to less of X- chromosomes
D. It happens due to binacleated eggs
Answer : Option B
54. What is Barr body ?
A. One more than the number of X - chromosomes
B. One more than the number of Y-chromosomes
C. One less than the number of X - chromosomes
D. Two less than the number of X - chromosomes
Answer : Option C
55. What is called Free martin ?
A. Sterile male born along with a fertile female
B. Sterile intersex born along with a fertile female
C. Sterile super male born along with a intersex
D. Sterile female born along with a fertile male
Answer : Option D
56. Out of the following , Find out the reason for occurrence of free martin in cattles ?
A. Both the twins are connected by a common umbilical cord
B. Gonad of the male develop earlier then those of the female
C. Male hormones reach the female embryo and influence the development of male sex in the female embryo
D. All of the above
Answer : Option D
57. In this group of plants male is heterogametic and female is homogametic type
58. Name the Plant possessing two X chromosomes
A. Humulus japanic
B. Dioscoria sinulate
C. Flagellaria
D. Both (A) & (B)
Answer : Option D
59. State the mutant gene Which converts the male flowers into female flowers In Maize plant
60. By which gene sex is determind in Spinach ?
A. Single gene "m" located in the X- chromosome
B. Single gene "m" located in the Y- chromosome
C. Single gene "t" located in the X- chromosome
D. Single gene "t" located in the Y- chromosome
Answer : Option A