What is the source of electrons for carbon fixation in plants?
a. O2
b. CO2
c. H2O
d. H+
e. C6H12O6
ANSWER: c
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Calculate the narrow-sense heritability of height between aunts and neices if the observed phenotypic correlation coefficient is 0.1
A. 0.4 B. 2.5 C. 4 D. 0.25
Blue flower color (B allele) is dominant to white (b allele). If a population of plants in Hardy-Weinberg equilibrium contains white flowers (bb) at a frequency of 0.04, what is the frequency of the blue flower allele (B)?
A. 0.2 or 20% B. 0.64 or 64% C. 0.32 or 32% D. 0.8 or 80% E. 0.96 or 96%
Which of the following organelles possess DNA separate from nuclear DNA that can be used to trace genealogies of humans?
a. ribosomes b. chloroplasts c. mitochondria d. lysosomes
One of the most critical adaptations of the reptiles in relation to their life on land is the evolution of the
A. amniotic egg. B. allantois egg. C. chorionic egg. D. swim bladder. E. diploid egg.