A plant has the genotype AaBb for two characteristics. The genes that control each characteristic are on different chromosomes. The plant produces sperm by a process that begins with meiotic cell division. Which
genotypes will the plant's sperm have?
1.Aa and Bb
2.AB and ab
3.AB, ab, aB and Ab
4.AA, Aa, BB, Bb, AB, Ab, aB and ab

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

only about ten percent of the energy at one trophic level is passed on to organisms at the next trophic level. the remainder of the energy is used in life processes or lost as heat.