The first strands of DNA were observed through which microscope? tunneling microscopesimple microscopecompound light microscopeelectron microscope

How are members of the genus Homo different physically from the Australopithecus? a. flattening of the face (the mouth doesn’t protrude forward like the australopithecines) b. shorter arms c. smaller-sized teeth and jaws d. all of the above e.

If a species of flower has the allele r (red) which is incompletely dominant to the allele r (white) what color is the genotype of an individual with a red flower? choose as many as are appropriate.

How might a decrease in biodiversity affect medical discoveries and treatments?

Soil bacteria are responsible for any steps in the nitrogen cycle. Soil bacteria are NOT responsible for A) assimilation. B) nitrification. C) ammonification. D) nitrogen fixation.

In the west, what would be considered the great equalizer for African American Cowboys? Sharing of well cooked meals Working with cooperative Native Americans Working on the ranch and cattle trail with white cowboys The short trails between

In the following experiment, what is the independent variable? Dr. Honeydew would like to test the effect of chlorine on Beaker's hair color. To test this he pours heavily chlorinated pool water on the right side of Beakers head.

If a small founder population of 12 people ends up on a small island, and one member of the population had a mutation that creates a new allele, what is the likelihood that the allele will be eliminated from the population?

Homologous structures (Group of answer choices): A. are also called analogous structures. B. have identical functions. C. are shared by organisms of the same genus. D. have fully divergent functions. E.

Which of the following is true of an enzyme? (mark all that apply) a. it is a protein b. it is a catalyst c. it binds to many different substances d. it is small compered to its substrates

Which term would be applied to a regulatory condition that occurs when protein is associated with a particular section of DNA and greatly reduces transcription? A) induction B) negative control C) stimulation D) positive control E) activation