. If tall (D) is dominant to dwarf (d), and two homozygous varieties DD and dd are crossed, the progeny produced will
be____.
a. all intermediate forms
b. all tall
c. all dwarf
d. 1/2 tall, 1/2 dwarf
e. 3/4 tall, 1/4 dwarf
ANSWER: b
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A. genetic outflow. B. large population size. C. selection. D. inheritance of acquired characteristics. E. random mating.
What is a lysosome's role in intracellular digestion?
a. absorption b. enzymatic digestion c. filtration d. mechanical digestion e. produces energy
In eukaryotes, the nucleus is enclosed by a double membrane called the:
A) cell membrane. B) nuclear envelope. C) nucleolus. D) nucleoplasm. E) nucleosome.
Water has fewer hydrogen atoms than lemon juice and a pH of around 7. Predict what will happen to the pH level of water when lemon juice is added.
A. The pH will remain the same. B. The pH will become higher. C. The pH will become lower. D. There is not enough information to decide.