In corn, a dihybrid for the recessives a and b is testcrossed. The distribution of the phenotypes is as fol- lows: AB 122 Ab 118 aB 81 ab 79 Test the hypothesis that these genes are assorting independently using a chi-square test. Explain tentatively any deviation from expected values, and tell how you would test your explanation.

Choose one animal (cheetas) and research on the internet what has contributed to this animal becoming "endangered" or "threatened." what animal you have chosen? how long has the animal been endangered or threatened? what has contributed to this animal’s endangered or threatened status? why is it important to save this animal from extinction? after researching and gathering facts, write a 350-word letter from the point of view of an animal rights' activist. be sure to include at least five facts that you learned from your research.

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal responds by in order to its core temperature?

How can an organ, such as the lungs, work for multiple body systems?