Familial hypercholesterolemia is a condition explainable by
a. autosomal dominance.
b. X linkage.
c. autosomal recessiveness.
d. translocation.
e. chromosomal duplication.
A
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The dead brown spots on these leaves
are sites where a pathogen invaded and triggered the defensive destruction of surrounding cells. This is an example of which type of defense?
1.activation of heat-shock proteins 2.increased production of terpenes 3.systemic acquired resistance 4.the hypersensitive responseThe hormone most directly responsible for stimulating the growth of the endometrium in the first half of the menstrual cycle is ______.
A. progesterone B. testosterone C. estrogen D. LH
Explain how scientists believe plants are able to raise water to great heights to reach the treetops.
What will be an ideal response?
Please match the types of mutations with the statements that most accurately describe them, to test your understanding of their causes.
Spontaneous mutation A) Random change in the DNA arising from errors in replication that occur without a known cause B) Result from exposure to known mutagens, which are primarily physical or chemical agents that damage DNA C) Changing of single base in the DNA code that may result in the placement of a different amino acid D) Addition or deletion of bases that changes the reading of mRNA codons