A ____ is formed as the direct result of cytoplasmic fusion in basidiomycetes and ascomycetes
a. dikaryotic cell
b. Zygote
c. Gamete
d. Spore
e. Mushroom
ANSWER: a
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Archaeal membranes contain which of the following lipids?
A. Glycolipids B. Phospholipids C. Sulfolipids D. All of the choices are correct.
Extrachromasomal DNA is found in ____________________________
A. mitochondria B. plasmids C. nucleoid D. nucleoli E. mitochondria AND plasmids
Hybrid sterility occurs when
1.gametes from two different species won’t combine. 2.a zygote formed by two different species dies as an embryo. 3.two different species don’t recognize each others signals. 4.a hybrid of two different species can’t form viable gametes. 5.a hybrid of two different species can’t form viable gametes after a few generations.
When a cell is placed in a hypotonic environment, the cell will usually undergo:
a. cytolysis b. plasmolysis c. experience a decrease in turgor pressure d. be at equilibrium