Albinism, lack of pigmentation in humans, is an autosomal recessive disorder. a normally pigmented woman who has an albino uncle wishes to marry a phenotypically normal man whose sister is an albino. (assume that these are the only individuals known to be albino in the two families) what is the probability that the couple's first child is an albino? unless there is evidence to the contrary, all individuals marrying into the family are assumed to be homozygous.

Which organism is the producer in this food web? 7th grade question. a) arthropods b) birds c) fungi d) plants

The process by which natural forces move weathered rock and soil brim one place to another is called

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.