Which of the following is the most accurate statement about the relationship between gene duplication and mobile genetic elements?
A) The most common way that genes are duplicated is by the activity of mobile genetic elements.
B) A duplicated gene is an example of one kind of mobile genetic element.
C) Mobile genetic elements can cause gene duplication, but most gene duplication events are caused by other mechanisms.
D) Gene duplication is one kind of genomic defense against the spread of mobile genetic elements.
C
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A. sporophyte ; spermatogenesis B. gametophyte ; sporophyte C. sporophyte ; gametophyte D. oogenesis ; gametophyte
In radishes, red and white are the pure-breeding
colors, and long and round are the pure-breeding shapes, while the hybrids are purple and oval. The cross of a purple oval with a purple oval a. is a cross between two pure-breeding forms. b. is an example of a testcross. c. produces only homozygous pure-breeding forms. d. produces only heterozygous offspring. e. none of these are true.
Which of the following is part of the brain?
A) thymus B) hypothalamus C) adrenal cortex D) thyroid
Transcription converts the information stored in _________ to ____________.
a) RNA .... a protein b) a protein..... DNA c) DNA...... A protein d) DNA...... RNA