Asexual reproduction __________.
A. is limited to plants
B. produces offspring that always look exactly like the parent
C. leads to a loss of genetic material
D. can produce offspring genetically identical to the one single parent
D. can produce offspring genetically identical to the one single parent
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BOTH physical and chemical methods are used to treat and purify water
Indicate whether the statement is true or false.
Which of the following characteristics would be true of an epithelium specialized for exchange by diffusion (e.g., a respiratory epithelium)?
A. Thin with a relatively large surface area B. Thick with a relatively large surface area C. Thin with a relatively small surface area D. Thick with a relatively small surface area E. Thin with a small surface area/volume ratio
In organogenesis, which of the following is a precursor structure to the brain and spinal cord?
a. notochord b. somites c. neural tube d. cloaca
Frameshift mutations may involve
a. substitution of nucleotides. b. substitution of codons. c. substitution of amino acids. d. addition or deletion of one or more base pairs. e. none of these.