Of the following, who is most likely to develop a chronic infection with hepatitis B virus?
A) children between the ages of 2 and 12
B) newborns
C) females at puberty
D) young adults
E) the elderly
B
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Non-coding DNA regions within a gene are referred to as
A. introns. B. exons. C. templates. D. transposons. E. pseudogenes.
A couple are both heterozygous for the dominant allele for polydactyly. They want to have three
children. What is the probability that all three children will have polydactyly?
a. 3/4 b. 9/64 c. 1/64 d. 27/64 e. 1/2
What is a major difference between saturated and unsaturated fats?
A) At room temperature, saturated fats are liquid and unsaturated fats are solid. B) Unsaturated fats have a flat molecular structure, but saturated fats are kinked. C) Saturated fat molecules are packed together loosely, but unsaturated fats are tightly packed. D) Unsaturated fats contain carbon-to-carbon double bonds, but saturated fats don't.
All the members of a species that live within an ecosystem form a(n) ________
Fill in the blank(s) with correct word