The wings of a bat and a bird are examples of

A. analogous structures.
B. homologous structures.
C. vestigial structures.
D. homeotic structures.
E. heterologous structures.


Answer: B. homologous structures.

Biology & Microbiology

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The ____________ of a comet can be up to a million kilometers in diameter

Fill in the blank(s) with correct word

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The study of the patterns in the distribution of plants and animals around the world is

a. diversity. b. biogeography. c. ecology. d. archaeology. e. environmentalism.

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Bacteriophages attach to the cell walls of bacteria by envelope proteins

____________________ Indicate whether the statement is true or false.

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Which types of phenotypic ratios are likely to occur in crosses when dealing with three gene pairs for which all the genotypic combinations are of equal viability?

A) 12:3:1, 9:7 B) 1:2:1, 3:1 C) 2:3, 1:2 D) 1:4:6:4:1, 1:1:1:1 E) 27:9:9:9:3:3:3:1

Biology & Microbiology