Gametes, which are sex cells, carry the alleles. Why must a gamete carry one allele (represented by a letter) from each gene? Meaning, why can't a gamete carry a "hh" instead of a "hs" or a "Hh" instead of an "HS"?

This aquarium exhibits biotic and abiotic factors in an aquatic environment. one of the abiotic factors is

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Residential construction is expanding in florida, the expansion has caused fragmentation of habitats, one of the results of the increased construction is a decrease in the number of large predators such as the coyote, black bear and pool panther, which will be the most immediate local result of this fragmentation? 1)large predators will become extinct 2)decrease in middle sized predators 3)increase in population of top carnivores 4)increase in population of prey species