Coat color in labrador retrievers is determined by two genes. The presence of a B allele allows synthesis of a black pigment, and the recessive allele of this gene, b, leads to the synthesis of a brown pigment. Thus, black labradors have the genotype B/- while brown labradors have the genotype b/b. A second, unlinked locus, the E gene, determines whether or not pigment will be deposited in the fur. Labradors of genotype E/- will have dark-colored fur (either black or brown) while yellow labradors have the recessive genotype e/e. Since having the genotype e/e will result in a yellow coat no matter whether the dog is B/- or b/b, carrying two copies of the e allele is recessively epistatic to the B gene. If a dihybrid cross is done between two black labradors heterozygous for both genes, what is the probability of obtaining a yellow labrador as offspring

Hunting in the darksome fish rely on senses beyond sight. in the darkness of the marianas trench, a fish called the rattail has an extremely sensitive sense of smell. the fish uses scent, rather than sight, to steer toward food. once it's near food, the rattail uses a special organ on the bottom of its chin to guide itself by feel.marine snowone staple of the deep sea diet is "marine snow," flakes of organic, edible substances that sink down from the upper ocean. animals at the ocean's bottom find sustenance in everything from the bodies of dead creatures to fecal matter. marine snow is diverse enough to support numerous species. for instance, several species of snails and worms feed exclusively on deceased whales.microorganismsthe deep sea is an intricate ecosystem, and even the ocean floor itself plays a part. hydrothermal vents are cracks in the sea floor where erupting magma mixes with ocean water to produce plumes of hot, sulfur-rich chemicals. some microbes can use these chemicals for energy, sustaining their existence and that of the animals who depend on their roles in the deep sea food chain.

Breacking the law and lazy

Prompt: write about whether or not you plan to register to vote when you are 18 and what political party preference (if any) you will disclose. explain the reasons for your decisions.

Yes yes yes very good