Geneticists discovered checkpoint genes involved in the cell cycle by studying the process in ____
a. yeast
b. chytrids
c. zygote fungi
d. mycorrhizal fungi
e. bacteria
a
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Which factors contribute most to intraspecific competition?
A. a species' rate of reproduction and the carrying capacity of the environment B. predation and parasitism C. mutualistic relationships D. a species' fundamental niche and abiotic surroundings E. increased diversity of adaptations and resource partitioning.
The double layered sac that surrounds the heart
and protects and anchors it is called the
a. peritoneum. b. perineum. c. pericardium. d. peristalsis. e. periwinkle
A __________ is a hybrid, with two nonidentical
alleles (Aa). Fill in the blank(s) with the appropriate word(s).
The final step in karyotyping is when _____.
A) colchicine is added to the suspension of cells and growth medium B) the cells are osmotically shocked C) the photographed chromosomes are cut up and reorganized by size D) a pedigree is constructed from the assembled family history