3. What does the term molecular clock mean? changes which appear to accumulate in a specific protein at a constant rate
O an example of an organ or bone that appears in different animals, underlining anatomical commonalities demonstrating descent from a common ancestor
the separation into two separate species from a common ancestor

Which of the following is true of microbes? a. ninety-nine percent of all microbes are pathogenic.b. gene expression in bacteria is very similar to gene expression in humans, which facilitates the use of bacteria in recombinant biotechnology and gene therapy.c. all bacterial enzymes are harmful to humans and the environment.d. microbes create pollutants and toxins that harm the environment.

Most animal cells membranes have proteins that pump ions out of the cell and potassium ions into the cell

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.