In the 1940s and 1950s, scientists did experiments to determine the molecule responsible for heredity. their experiments demonstrated that the molecule that encodes and transmits information in organisms is
a. dna.
b. glucosamine.
c. insulin.
d. vitamin d.

Which of the following will not cause mass extinction? a. drastic change is weather b. geological change c. both a and b d. none of the above

Acertain species of fish can have either long or short fins. the allele for long fins is dominant over the allele for short fins. a heterozygous, long-finned fish is crossed with a homozygous, short-finned fish. of the offspring, will have long fins and be , and will have short fins and be .

What is the average speed of a car that traveled 300.0 miles in 5.5 hours