Slow freezing is more damaging to microbial cells than quick freezing
Indicate whether the statement is true or false
TRUE
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The three phylogenetic trees shown here all contain the same members and all have a common ancestor, but are divided up in three different ways. Which tree has members circled that are of more than one evolutionary line and does not include the most recent common ancestor of the included lineages? What type of group is this?
A. Tree 1; monophyletic.
B. Tree 2; polyphyletic.
C. Tree 2; paraphyletic.
D. Tree 3; monophyletic.
E. Tree 3; polyphyletic.
Mutated versions of one or both of the genes BRCA1 and BRCA2 are associated with an increased risk of ________
a. breast cancer only b. lung cancer and pancreatic cancer c. both breast cancer and ovarian cancer d. lymphoma only
Identify negative feedback component C
a. integrator b. sensor c. stimulus d. response e. effector
Bivalves lack which of the following molluscan
features? a. foot b. radula c. mantle d. shells e. visceral mass