The organism that Mendel used for his experiments was
A) E. coli.
B) the fruit fly.
C) maize.
D) yeast.
E) the pea plant.
E
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Thalidomide, an anticonvulsive and antihistamine medication, was shown to cause severely deformed limbs in children whose mothers took the medication. What might thalidomide do during development?
A. Cause a defect in the fertilization of an egg. B. Severely alter blastulation in the embryo. C. Impair morphogenetic fields within the embryo. D. Impair neural tube formation. E. Block cell division during blastulation.
Four of the five answers are common traits of pioneer plant species. Select the exception
a. small size b. effective seed dispersal c. brief life cycles d. tolerant of intense sunlight or extreme temperature changes e. requires nutrient rich soil
Which of the following is a water soluble
vitamin?
a. A b. K c. D d. E e. C
Which of the following is not true of
mitochondria? a. They have DNA. b. Their DNA can experience mutations. c. In animals the mitochondria come from the mother. d. They undergo genetic recombination during fertilization. e. All these are true