The essence of meiosis is that cells are formed that:
a. receive one copy of each member of each pair of homologous chromosomes.
b. receive two copies of each member of each pair of homologous chromosomes.
c. receive one member of each pair of homologous chromosomes.
d. receive two members of each pair of homologous chromosomes.
e. are exact copies of the parent cell.
c
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In this treatment of bacteria with cold transformation solution followed by heat-shock, the procedure
(a) transformed cells. (b) nontransformed cells. (c) cells that have the gene for resistance to the antibiotic. (d) both a and c.
During long-term stress, cortisol levels can remain high. What are some of the problems associated with this?
What will be an ideal response?
Which organism would have a four-chambered heart to separate oxygenated from deoxygenated blood?
1.bird 2.fish 3.frog 4.turtle
The mechanism by which gram-negative bacteria can cross the blood-brain barrier?
a. Producing fimbriae b. Inducing endocytosis c. Producing toxins d. Inducing TNF e. All of these