In garden peas, one pair of alleles controls the height of the plant, and a second pair of alleles controls
flower color. The allele for tall (D) is dominant to the allele for dwarf (d), and the allele for purple (P)
is dominant to the allele for white (p). A tall plant with white flowers crossed with a dwarf plant with
purple flowers produces 1/4 tall purple, 1/4 tall white, 1/4 dwarf purple, and 1/4 dwarf white. What is
the genotype of the parents? What will be an ideal response?
Dd pp ? dd Pp
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________ degrades mRNAs that contain premature stops.
Fill in the blank(s) with the appropriate word(s).
The eggs of Paragonimus mexicanus measure approximately 80 µm by 40 µm, are unembryo-nated and operculated, and have thick shells that are brownish-yellow. An individual with this infection has most likely traveled to which endemic area?
a. Japan b. Africa c. New Guinea d. South America
What conclusions can be drawn from the studies on bent grass in a copper-polluted field and the
neighboring population in a non-polluted field?
a. Flowers in the polluted field will not survive. b. The one population now requires copper to survive. c. They have different flowering schedules, so isolation may be developing. d. They have different types of gametes, so isolation has taken place. e. They show no differences.
What biochemical clues support the idea that all living things evolved from one common ancestor?
What will be an ideal response?