Eyelash length is an inherited trait. In the human population, there is an eyelash length gene. There are two possible variants of this gene-an allele for long eyelashes (> 1cm) and an allele for short eyelashes (1 cm or less). How many eyelash length alleles does an individual have in one of her/his somatic cells?
A. 46
B. 3
C. 2
D. 23
E. 1
Answer: C
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In the second generation of a cross of DDRR
with ddrr the most common genotype would be
a. DDRR. b. DdRR. c. DdRr. d. ddRR. e. ddRr
A __________ dominates bryophyte life cycles. Fill in the blank(s) with the appropriate word(s)
In a reversible chemical reaction at equilibrium, the concentration of X (the reactant) is 0.75 mol/L, and the concentration of Y (the product) is 2.25 mol/L. At 25°C, what would be the Keq?
A) 0.33 B) 3.0 C) 1.69 D) 1.50 E) 37.5
The findings of Pasteur and others have established that
A) living organisms regularly self-assemble (arise spontaneously) from nonliving matter. B) living organisms do not arise from nonliving matter today, nor did they arise from nonlife in the past. C) advanced organisms cannot arise from nonliving matter, but simple microbial life often does arise from nonlife today. D) life does not arise from nonliving matter today, but in the conditions of early Earth, such an event could have occurred.