Which of the following statements is
INCORRECT about eukaryotic chromosomes?
a. The number of chromosomes varies from
one species to another.
b. All eukaryotes have the same system of
autosomes and sex chromosomes.
c. A chromosome consists of DNA associated
with histone proteins.
d. After duplication, all paired chromosomes
are attached at the centromere.
e. After duplication, each chromosome
consists of two sister chromatids.
B
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A salmon follows a scent trail upstream to find its way back to the stream where it hatched. What type of sensory receptor cell would it use?
A) thermoreceptors B) mechanoreceptors C) chemoreceptors D) electroreceptors E) nociceptors
Which of the following is a unique organelle found within some protists but not in higher animal cells?
A. Mitochondrion B. Contractile vacuole C. Endoplasmic reticulum D. Golgi apparatus
Which of the following is the most abundant immunological class produced?
A. IgA B. IgD C. IgG D. IgE
What is meant by the statement: we live in the "Age of the Gene"?
People are constantly being informed of yet another complex human characteristic or trait linked to a newly discovered gene. Genes have become an important aspect of human and agricultural life. This generation of children are all most likely to be genetically modified. Genes have become the only way to solve any criminal cases; therefore, if there is no DNA evidence, a case cannot be proven. Both the first and second answer choices best explain what is meant by the "Age of the Gene."