Question 10. Which two of the following may pass through the placenta and harm the embryo?
a. Bacteria and Fungi
b. Drugs and Bacteria
c. Viruses and Fungi
d. Viruses and Drugs

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 .

The frequency of alleles in a population that is in hardy weinberg equilibrium? a . changes in each successive generation b. is less important than the frequency genotypes c. shows evidence of the process of natural selection d. remains the same over several generations

When the oxygen produced by photosynthetic plants in the water dissolves in the water, which of these is being formed?