Genetic drift is non-selective and therefore does not contribute to microevolution

Indicate whether the statement is true or false.


ANS: F, but does contribute to microevolution by changing allele frequencies

Biology & Microbiology

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The two copies of each type of chromosome found in normal somatic (body) cells in an organism, throughout the cell cycle, are called:

A. Homologous chromosomes B. Daughter chromosomes C. Kinetochores D. Sister chromatids

Biology & Microbiology

What is the blind spot, and why does it occur?

What will be an ideal response?

Biology & Microbiology

Prader-Willi (PW) and Angelman syndromes (AS) are imprinting disorders of the same region on chromosome 15. Normally, the genes associated with PW are ________ imprinted (silenced), and the one gene associated with AS is ________ imprinted (silenced)

A) paternally; paternally B) paternally; maternally C) maternally; paternally D) randomly; paternally E) maternally; randomly

Biology & Microbiology

Nerve impulses are electrical signals measured across which structure?  

A.  lipid sheath of Schwann cell B.  plasma membrane of neuron C.  synapse D.  neuromuscular junction

Biology & Microbiology