Which of the following is the highest (or most complex) level of structure for genetic material?
A. nucleotide
B. double helix
C. DNA
D. gene
E. chromosome
E. chromosome
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To know that the 13 finch species that inhabit the Galápagos are descended from a common ancestor,
biologists had to rely on ____.
a. Darwin's notebooks describing his observations b. comparative molecular biology c. comparative embryology d. Mendelian genetics e. modern historical biogeography and Darwin's observations
What is a gene?
A. A section of DNA that codes for a portion of a protein B. A discrete sequence of DNA nucleotides C. A section of DNA that codes for one or more proteins D. All of these and more are part of the expanding definition of a gene.
Generally, r-selected organisms exhibit:a
short life spans and early maturity. b. long life spans and extended parental care of offspring. c. long development time to maturity, but small body size. d. large body size and extended parental care of offspring. e. large body size, but short life spans.
Cytogenetics
What will be an ideal response?