Aman with red hair (recessive) marries a woman with black hair (dominant) whose mother had red hair. what are the chances that their first child will have red hair? a man with red hair (recessive) marries a woman with black hair whose mother had red hair. what are the chances that their first child will have red hair or black hair

Coquina, a type of limestone, forms from shell fragments that settle on the ocean floor. what type of rock is coquina?

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

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.