What is the most common way of introducing novel genotypic and phenotypic variants into a population?

a. gene flow
b. genetic drift
c. mutation
d. natural selection


c. mutation

Biology & Microbiology

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The structure designated by the letter "B" in the above figure is called the ____

a. pyloric sphincter b. esophagus c. small intestine d. duodenum e. appendix

Biology & Microbiology

Podocytes are located in the wall of:

a. Bowman's capsule.

b. the glomerulus. c. the peritubular capillaries. d. the renal artery. e. the proximal convoluted tubule

Biology & Microbiology

How does prophase in mitosis differ from prophase I in meiosis?

A) During prophase in mitosis, the chromosomes are duplicated. B) During prophase in mitosis the homologous chromosomes pair together. C) During prophase I in meiosis the homologous chromosomes pair together. D) During prophase I in meiosis the chromosomes are duplicated

Biology & Microbiology

If the sequence of bases in a section of DNA is TAGGCTAA, what is the corresponding sequence of bases in mRNA?

A) ATCCGATT B) CGAAUCGG C) TAGGCTAA D) AATCGGAT E) AUCCGAUU

Biology & Microbiology