Crossing Over

question 67

Multiple Choice

Crossing over

• A)generally results in pairing up and binary fission.
• B)involves nuclei.
• C)involves breakages and exchanges between sister chromatids.
• D)alters the composition of chromosomes and results in new combinations of alleles being channeled into the daughter cells.
• E)is true of all of these.

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Definitions:

Amphetamines

A class of stimulant drugs that increase activity within the brain and nervous system, often used to treat ADHD and narcolepsy.

Bodybuilders

Individuals who engage in intensive physical training and dieting to develop and maintain a muscular and defined physique.

3,4-methylenedioxymethamphetamine (MDMA)

A psychoactive drug primarily known for its euphoric and empathogenic effects, commonly associated with recreational use.

Gamma-hydroxybutyrate (GHB)

A central nervous system depressant often used recreationally for its euphoric effects, but also associated with serious risks like unconsciousness and overdose.