A Neurophysiologist Is Investigating Nerve Reflexes in Two Different Animals-A

question 39

Multiple Choice

A neurophysiologist is investigating nerve reflexes in two different animals-a crab and a fish. Action potentials are found to pass more rapidly along the fish's neurons. What is the most likely explanation?

• A) The fish's axons are smaller in diameter; small axons transmit action potentials faster than large axons do.
• B) Unlike the crab, the fish's axons are wrapped in myelin.
• C) There are more ion channels in the axons of the crab compared with fish axons.
• D) Answers A and B are both correct.

Comprehend the impact of environmental and genetic factors on phenotypic traits.

Interpret genetic data from crosses to determine linkage and gene maps.

Understand the genetic basis of sex determination in humans.

Explain the concepts of heterozygosity, homozygosity, and hemizygosity in the context of genetic traits.

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Definitions:

Bond Liability

An obligation or debt issued by a company, promising to repay the principal amount along with interest to bondholders at a specified future date.

Convertible Bond

A type of bond that can be converted into a predetermined number of the issuer's equity shares at certain times during the bond's life, usually at the discretion of the bondholder.