The correlation between the time two species have been evolutionarily separated and the amount of genetic divergence between them is known as the ____
Fill in the blank with the appropriate word.
molecular clock
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The trachea is located behind the esophagus.
a. true b. false
Exocrine glands have no ducts and secrete their hormones into the surrounding interstial fluid or blood. Indicate whether the statement is true or false
When cloning a gene, one of the steps is to use restriction enzymes to insert the gene of interest into a vector. If you separated the empty vector (the vector without the gene of interest) and the cloned vector (the vector that has the gene of interest
added) using agarose gel electrophoresis, what do you expect to observe on the agarose gel if both vectors are loaded at the same position at the top of the gel? A) The empty vector would migrate farther down than the cloned vector. B) The cloned vector would migrate farther down than the cloned vector. C) The empty vector would migrate the same distance as the cloned vector.
In a heterozygote for two linked genes, both dominant alleles are on one chromosome and both recessive alleles are on another chromosome. The genes are said to be in
A) recombination. B) repulsion. C) cis. D) trans.