Adaptive radiation is best described as the
A. existence of groups of distantly related species recently evolved from a common ancestor.
B. existence of groups of closely related species recently evolved from different ancestors through hybridization.
C. existence of individuals of closely related species that originated in different areas within diverse habitats but that have rejoined as a single species.
D. existence of groups of closely related species recently evolved from a common ancestor.
Answer: D
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Considering a most inclusive to least inclusive approach, which category used in the taxonomic classification system precedes order?
a. class b. family c. genus d. species
If you skip a meal, which of the following conditions
will prevail? a. Insulin levels will rise. b. Glucagon levels will rise. c. Glycogen will be converted to glucose. d. Insulin levels will rise, and glycogen will be converted to glucose. e. Glucagon levels will rise, and glycogen will be converted to glucose.
Space for storing food, water, enzymes, or waste= ______________.
Fill in the blank(s) with the appropriate word(s).
Which statement about fruit fly development is false?
A) One of the earliest development events is the determination of the head and tail ends of the egg. B) The location of the head and tail ends of the egg is primarily determined by the location of sperm entry during fertilization. C) Homeotic genes regulate batteries of other genes that direct the anatomical identity of body parts. D) Cascades of gene expression routinely direct fruit fly development.