When Mendel crossed tall (Tt) plants with tall (Tt) plants the offspring
a) did not grow and reproduce.
b) were always short.
c) were always tall.
d) were always medium height.
e) were mostly tall individuals and a few short individuals.
Ans: e) were mostly tall individuals and a few short individuals.
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Which of the following is not true of tropical communities?
a. they occur at the equator b. they receive more intense sunlight c. they have a longer growing season d. they receive less rainfall than temperate communities e. they have been established for a longer period of time
I am a ribonucleoprotein; I contain both a polypeptide and an RNA molecule. My RNA binds to unique sequences on a DNA molecule, targeting them for cleavage by my polypeptide. I occur naturally in microbes to protect against viral attack, and I can be engineered in the lab for precision DNA editing. What am I?
A. Cas9 nuclease B. EcoR1 restriction enzyme C. 3' oligonucleotide D. RNA polymerase
Prior to N-linked glycosylation of a protein, a complex oligosaccharide is assembled in the endoplasmic reticulum on a lipid carrier called
a. a prenyl group. b. myristic acid. c. dolichol phosphate. d. phosphatidylinositol.
________________ are cytoplasmic extensions, not found in sensory neurons, that receive chemical signals from other neurons and convert them to electrical signals.
Fill in the blank(s) with the appropriate word(s).