A ________ is all the genes on a single chromosome
A) gene loci line
B) linkage group
C) chromosomal conglomeration
D) genetic allele formation
E) recombination group
Answer: B
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Apical meristems in lateral buds can give rise
to all of these structures except
a. branches. b. leaves. c. flowers. d. lateral meristems. e. there is no exception--lateral bud apical meristems can give rise to all of these structures.
Euglenoids live in freshwater; a __________ rids
them of excess water. Fill in the blank(s) with the appropriate word(s).
The organelle that degrades potentially harmful hydrogen peroxide to harmless substances is the
a. lysosome. b. peroxisome. c. mitochondrion. d. endoplasmic reticula e. Golgi body.
Which of the following statements best describes the history of life on Earth?
A) The Earth had multicellular life-forms for most of its history. B) The Earth had single-celled life-forms for most of its history. C) The Earth was lifeless far longer than it had living things. D) The Earth had photosynthetic organisms about 100 million years after it formed.