In a particular species of frogs, black spots are dominant trait in their absence is a recessive trait. In a population of frogs, 50 are homozygous for the dominant trait, 34 are heterozygous, And 16 show the recessive trait. Which expression is the correct way to calculate the frequency of the dominant allele?

During the winter, this species of fox has white fur, but in the summer, it has brown fur. what environmental change may have lead to this fox's fur color? snow cover increase in sun's brightness volcanic eruption global warming

The first amino acid of a new polypeptide chain is

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.