The timing of puberty can be influenced by which of the following?:

a. genes
b. stress
c. amount of body fat
d. all of the above


Answer: d. all of the above

Biology & Microbiology

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Physical exchange between homologous chromosomes (crossover) occurs during the fourstrand stage of meiosis

A. true B. false

Biology & Microbiology

The functional link between cardiac muscle cells is called ____

a. intrinsic pacemakers b. nodes c. intercalated discs d. bundle branches e. extrinsic pacemakers

Biology & Microbiology

Which technique uses the least amount of sample needed for forensic analysis?

A) PCR B) RFLP C) Genomic DNA D) cDNA isolation E) Southern blot

Biology & Microbiology

Dead or damaged cells are replaced by the process of ________

A) fertilization B) binary fission C) meiosis D) mitosis

Biology & Microbiology