A mutation that results in the death of the

individual is called



a. a beneficial mutation.
b. a lethal mutation.
c. a random mutation.
d. a spontaneous mutation.
e. a neutral mutation


B

Biology & Microbiology

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What force is created by the negative water pressure resulting from water evaporating from the stomata of a leaf?

A) cohesion B) adhesion C) tension D) pressure flow

Biology & Microbiology

Which of the following associations is not true?

Select one: a. Vitamin E is necessary for blood clotting. b. A deficiency in Vitamin C can cause delayed healing of wounds. c. A vital source of Vitamin A is deep yellow/orange vegetables. d. Many B vitamins can be obtained from green leafy vegetables or whole grains. e. Vitamin D is necessary for proper calcium absorption.

Biology & Microbiology

As a genetic counselor, you would explain to the parents that

A) the eggs must have been accidentally switched, since the baby's blood type has to match one of his parents. B) each parent could have contributed one recessive allele, resulting in type O blood. C) the eggs must have been accidentally switched, since a type A parent and a type B parent can have any type children except O. D) it is possible for the baby to have type O blood, since type O is inherited through a dominant allele.

Biology & Microbiology

________ and ________ BOTH contain inverted repeats and encode transposase

a. F plasmids / R plasmids b. Bacteria / Archaea c. Temperate phages / defective phages d. Insertion sequences / transposons

Biology & Microbiology