Chromatids separate during
(a) prophase.
(b) telophase.
(c) cytokinesis.
(d) anaphase.
(d) anaphase.
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The term used to describe the interrelationship between the living and non-living environments in an area is called a(n)
A. group. B. community. C. ecosystem. D. ecological niche
When experimenting with Streptococcus pneumoniae in the 1920s, Griffith concluded that some substance from the dead S strain bacteria passed to the R strain bacteria, imparting virulence and the ability to form a capsule. Avery and others continued the search for the substance that "transformed" the R strain into the S strain.Hypothesis I:Genetic material or "transforming substance" is protein.Hypothesis II:Genetic material or "transforming substance" is RNA.Hypothesis III:Genetic material or "transforming substance" is DNA.An experiment was performed that demonstrated that the addition of a protein-degrading enzyme did not prevent transformation. This finding
A. supports Hypothesis I. B. supports Hypothesis II. C. supports Hypothesis III. D. rejects Hypothesis I only. E. rejects Hypothesis II only. F. rejects Hypothesis III only. G. does not support any of these hypotheses.
Suppose you count 40 green tobacco seedlings and 2 white tobacco seedlings in one agar plate. Do your results show that both parent plants were heterozygous for the allele?
What will be an ideal response?
Lipid-soluble molecules would be expected to cross the cytoplasmic membrane by which of the following processes?
A) osmosis B) facilitated diffusion C) diffusion D) active transport E) group translocation