The site of formation of pollen grains is in the
a) receptacle.
b) stamen.
c) sepal.
d) carpel.
e) petal.
Ans: b) stamen.
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After mitosis, the chromosome number of a descendant cell is _____ the parent cell's
a. the same as b. one half of c. rearranged compared to d. doubled compared to e. less than
Which of the following is not a characteristic of an X-linked recessive disorder pedigree?
A. If a woman has the characteristic, all of her sons will have it. B. If a female has the trait, her father must also have it. C. An affected son can have normal parents. D. More females than males are affected. E. The characteristic often skips a generation.
Given the DNA sequence 5?-TAC AAA ATA CAG CGG-3?, which of these sequences represents a frameshift mutation?
A) 5?-TAG AAA ATA CAG CGG-3? B) 5?-TAC AAA TAC AGC GGG-3? C) 5?-TAC AAG ATA CAG CGG-3? D) 5?-TAC AAA ATA CAC CGG-3? E) 5?-TAC AAA ATA CAG AGG-3?
Attenuation involves the termination of mRNA synthesis
Indicate whether the statement is true or false