If the syringe contains live R strain
Streptococcus pneumoniae
a. the mouse will die.
b. live S strain will be detected in the mouse's
blood.
c. the mouse will live.
d. no live R strain will be detected in the
mouse's blood.
e. the live R strain bacteria will develop
pathogenicity
C
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Double fertilization is:
A. fertilization of two eggs in the same flower B. fertilization of an egg by two sperm C. fertilization of an egg by one sperm and of the nucleus of an endosperm-forming cell by another sperm D. fertilization of two eggs by the same sperm E. fertilization of an egg and an endosperm-forming cell by the same sperm
Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
What will be an ideal response?
Suppose that in plants, smooth seeds (S) is dominant to wrinkled seeds (s) and tall plants (T) is dominant to short plants (t). An F1 tall plant with smooth seeds was crossed to a parent plant that was short and wrinkled. What proportion of the progeny is expected to be heterozygous for tall and smooth?
A) 1/2 B) 1/4 C) 1/8 D) 1/16 E) 0
Post-translational modification of polypeptides includes
A. attaching lipids to the polypeptides. B. attaching sugar to the polypeptides. C. chemically changing some amino acids. D. removal of some amino acids. E. all of these.