What term describes a trait that is controlled by many genes?

A) dihybrid
B) dominant
C) heritable
D) polygenic


D

Biology & Microbiology

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Which is true of the nucleotide base composition within the DNA double helix?

A. G=A B. T=C C. T+A=C+G D. T+G=A+C E. A=U

Biology & Microbiology

The finding that mutations in synapse genes are associated with many genetic disorders that have a behavioral component suggests that _____

a. individuals with these mutations lack synapses b. individuals with these mutations lack neurotransmitters c. malfunctions in presynaptic neurons cause abnormal behavior d. malfunctioning synapses are associated with abnormal behavior e. behavior disorders are attributable to environmental factors

Biology & Microbiology

After years of listening to loud music on headphones, the cilia on Bob's hair cells are damaged. What is the result?  

Hair cells are delicate sensors of sound, movement, and gravity. Since they are stimulated by movement of the stereocilia and kinocilium, these structures are vulnerable to damage when stimulus is too strong or sustained. A.  vestibular problems B.  hearing loss C.  vision problems D.  taste hallucinations

Biology & Microbiology

The first mammals very likely arose from

A. dinosaurs. B. therapsids. C. amphibians. D. thecodonts.

Biology & Microbiology