A gene can have a maximum of two alleles
Indicate whether the statement is true or false
FALSE
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For what purpose is a researcher likely to shoot plant cells with a gene gun?
A) to kill the cell B) to introduce new DNA into the chloroplast genome C) to introduce a mutation in the nuclear genome D) to add a transgene to the mitochondrial genome
The famous Cambrian-era fossil deposit known as the Burgess Shale is now estimated to contain fossils of how many animal phyla?
A) None?animals had not appeared at the time. B) just two or three anatomically simple animal phyla C) about the same number as those alive today D) two or three times as many as alive today E) about half as many as are alive today
A person's blood pressure has fallen below normal as the person has quickly jumped out of his or her chair where he or she had been relaxing. All of the following reflect events in restoring the blood pressure to normal EXCEPT which one?
A) The heart rate will decrease. B) The baroreceptors will detect the drop in blood pressure. C) The medulla oblongata will send signals to the heart and to the blood vessels. D) The force of contraction of the heart will increase. E) Vasoconstriction of a number of arterioles will increase blood pressure.
An autotroph is likely to convert CO2 into reduced organic carbon in order to produce precursor metabolites.
Answer the following statement true (T) or false (F)