What single attribute determines that a human fetus is male?
A) the presence of a Y chromosome B) the absence of a Y chromosome
C) the presence of two X chromosomes D) the absence of a second X chromosome
Answer: A
Biology & Microbiology
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Which factor influences radioactive decay?
a. time b. temperature c. pressure d. moisture e. chemical bonding
Biology & Microbiology
Topic 2.10 - Terrestrial microbes
What will be an ideal response?
Biology & Microbiology
When MSH2 and MLH1 are inactivated by mutation, DNA repair is defective and ____________________ mutation
rates increase by at least 100-fold. Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
External fibrous layer
What will be an ideal response?
Biology & Microbiology