When Mendel used true-breeding white flowers and true-breeding purple flowers as the parental generation, what were the results? (Purple flower is dominant over white.)
A) All of the offspring had purple flowers.
B) Three-quarters of the flowers produced were white and one-quarter were purple.
C) One-half of the flowers produced were white and one-half were purple.
D) Three-quarters of the flowers produced were purple and one-quarter were white.
E) All of the offspring had white flowers.
A
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Fill in the blank(s) with the appropriate word(s).
Genes influence all aspects of life because they
A) are structural elements of the cell. B) regulate movement of proteins. C) produce RNA and protein needed for different processes. D) localize to the nucleus. E) are needed for DNA synthesis.
Superantigens are produced by antigen presenting cells
a. true b. false
Why might life be much older than LUCA?
What will be an ideal response?