Shine–Delgarno sequences are present in mRNAs of
A) prokaryotes.
B) eukaryotes.
C) fungi.
D) algae.
E) mosses.
A) prokaryotes.
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Which of the following is most true of sexual reproduction?
A) Sexual reproduction allows for more rapid population growth than does asexual reproduction. B) Only half of the offspring from sexually reproducing females are also females. C) Asexual reproduction produces offspring of greater genetic variety. D) Sexual reproduction is completed more rapidly than asexual reproduction. E) Asexual reproduction is better suited to environments with extremely varying conditions.
You are given two true-breeding groups of rabbits. The first group has floppy ears and white coat color. The second group has straight ears and black coat color
When you perform a cross of these two groups to obtain an F1 generation you see that all of your rabbits have floppy ears and grey coat color. Which of the following possibilities appears to be supported by what you see in the F1 generation? A. Straight ears are dominant over floppy ears; white coat color is dominant over black coat color. B. Straight ears are dominant over floppy ears; black coat color is dominant over white coat color. C. Straight ears are dominant over floppy ears; coat color is determined by intermediate dominance. D. Floppy ears are dominant over straight ears; white coat color is dominant over black coat color. E. Floppy ears are dominant over straight ears; black coat color is dominant over white coat color. F. Floppy ears are dominant over straight ears; coat color is determined by incomplete dominance.
How does the circulatory system of an annelid differ from the circulatory system of a gastropod?
What will be an ideal response?
During ecological succession, the species composition of a plant community generally
A) changes from a diverse community in which many plants are common to one in which a few species are numerically dominant. B) remains stable as long as climate and human interference remain constant. C) changes gradually because each species responds differently to the changing environment. D) changes until forest is established and a single species of plant remains.