46. In a complete dominance monohybrid cross between a pure breeding yellow flowered plant Y and a pure breeding white flowered plant y the result of the first filial generation is.
A. 50% yellow flowers
B. 75% yellow flowers
C. All yellow flowers
D. All white flowers
47. A man whose blood group is heterozygous B is married to a woman whose blood is heterozygous B. Which of the following statement is Correct about the blood group of their offspring?
A. Three of them belong to blood group B
B. Three of them belong to blood group O
C. None of them belong to blood group O
D. Two of them belong to blood group O
48. The cross between Rr Tt and rrrr where R is a gane for red color And T for tallness will result in.
A. All the offspring being tall with red fruits
B. 25% tall with red fruits
C. 50% tall with red fruits
D. 75% tall with red fruits
49. The yellow and black stripes on the body of wasps is an example of.
A. Mimicry
B. Courtship behavior
C. Camouflage
D. Warning coloration
50. The biological important of the dance by the worker honeybee is that it.
A. Acts as a signals for matting
B. Serve as a warning signal
C. Signal the availability of food
D. Serve as a means of identifying members of the caste