Mendel’s paired factors unite during the formation of reproductive cells
__________________ Indicate whether the statement is true or false.
F, segregate
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The major Canadian geological deposit that contains numerous Cambrian animals is the
A. Stomatolite formation. B. Ordovician coast. C. hydrothermal clays. D. Gondwana formation. E. Burgess shale.
Accommodation involves the ability to
a. change the sensitivity of the rods and cones by means of neurotransmitters. b. change the curvature of the cornea. c. change the width of the lens by contracting or relaxing certain muscles. d. adapt to large changes in light intensity. e. see variations in color.
Which of the following statements is true regarding Drosophila?
A) The ratio of autosomes to fly Y and X chromosomes determines fly sex. B) The Y chromosome plays no role on fly sex determination but does contain genes for fly reproduction. C) The Y chromosome determines male flies. D) The Y chromosome plays no role in fly sex determination or fly reproduction. E) The ratio of X to Y chromosomes determines fly sex.
Which of the following statements about RNAi is true?
(a) The RNAi mechanism is found only in plants and animals. (b) RNAi is induced when double-stranded, foreign RNA is present in the cell. (c) RISC uses the siRNA duplex to locate complementary foreign RNA molecules. (d) siRNAs bind to miRNAs to induce RNAi.