Mendel studied what he called characters and traits. What is the relationship between these terms?
a. Characters were heritable characteristics; traits were variations of characters.
b. Traits were heritable characteristics; characters were variations of traits.
c. Characters were the unknown package of transfer to the next generation; traits resulted
from this transfer.
d. Characters were passed to the next generation; traits were never passed to the next
generation.
e. Characters and traits were synonymous in Mendel's writings.
A
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Multiple sclerosis is a result of
A) the absence of myelin on nerve cells. B) excess amounts of myelin on nerve cells. C) an immune system attack on nerve fibers. D) blocking the nodes on Ranvier. E) having excess acetylcholine receptors.
Floods are worse after levees are built and wetlands are drained because
A. water moves into rivers more quickly. B. rainfall becomes more intense per unit area. C. the total volume of water increases. D. people complain more about damage. E. All of these are reasons floods are worse after levees are built and wetlands are drained.
Consider the refrigerator in your kitchen. Based on what you know about the first and second laws of thermodynamics, how does a refrigerator most likely work?
a. A refrigerator both destroys any heat in its interior, or in the food it contains, and creates new energy in the form of cold. b. A refrigerator removes the potential energy contained within food. c. A refrigerator removes heat from its interior and transports this energy outside, into the kitchen. d. A refrigerator creates new energy, although it is in the form of cold rather than heat. e. A refrigerator destroys any heat in its interior, or in the food it contains.
Sea stars (starfish) are bilaterally symmetrical at one time in their life cycle
Indicate whether the statement is true or false