Members of the Protista and Bacteria are similar in that both
A. are composed of prokaryotic cells.
B. groups contains some autotrophic organisms.
C. groups have cells that contain membranous organelles.
D. groups are composed of cells of equivalent size.
B. groups contains some autotrophic organisms.
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What made the plant hybridization studies performed by Mendel more successful than plant hybridization studies performed by others?
A. Mendel did not use true-breeding organisms because he wanted to assess the inheritance of more than one trait per breeding. B. Mendel was the first to identify characteristics of pea plants that could be observed as phenotypes. C. Mendel's understanding of natural selection inspired his methodology to examine the effect of environmental stressors on genetic diversity. D. Mendel used statistical analysis to analyze the phenotypes he observed. E. Mendel used qualitative analysis to evaluate the genotypes he observed.
Most of the aquatic macroinvertebrates in a stream are
(a) clams. (b) insect larvae. (c) worms. (d) arthropods such as crayfish.
Budding release of virus may result in long lasting or persistent infection
Indicate whether the statement is true or false
At what stage is a mutation predicted to have the effect?
A) after the age of 60 B) during early embryonic development C) after birth but before puberty D) shortly after birth E) after puberty