In a Dihybrid cross, two heterozygous parents, AaBb x AaBb have an offspring. What is the ratio of the offspring??

Which kind of aquatic ecosystem does the photograph most likely show? a. marsh b. swamp c. lake d. river

What are the types of mutations, and how does each alter the encoded protein? college level answer

Which phrase is the best summary of the model shown? a. the transfer of the sun's energy through trophic levels b. a series of aerobic and anaerobic reactions c. a transformation of light energy into chemical energy d. the breakdown of food molecules