The range of environmental temperatures in which a genotype can persist is one aspect of its _________.
a. habitat
b. niche
c. behavior
d. phylogeny
e. I don't know the answer
Answer: b. niche
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Which line or lines in the graph represent(s) bags that contain a solution that is hypertonic at 50 minutes?
A) A and B B) B C) C D) D E) D and E
What features of meiosis allow for independent assortment of chromosomes?
A. random alignment of homologous sister chromatids on the metaphase plate B. separation of sister chromatids C. reduction of chromosome number from diploid to haploid D. both the separation of sister chromatids and the reduction of chromosome number from diploid to haploid E. All of these features allow for the independent assortment of chromosomes.
Which of the following skin changes is not associated with growing older?
A. There is less adipose tissue in the subcutaneous layer. B. The number of elastic fibers decreases. C. There are fewer sweat glands for sweating to occur. D. There is an increase in the number of oil glands. E. Pigmented blotches appear on the skin.
Some prokaryotes attach to other substrates by hairlike outgrowths, which are shorter than flagella. These are called
A. fission products. B. endospores. C. plasmids. D. pili. E. flagellin.