If color blindness is an x-linked recessive trait, what genotype in a father and a mother would be predicted to produce a 1: 1 ratio of normal to color-blind offspring?

a.) unaffected father and unaffected (non-carrier) mother
b.) unaffected father and carrier mother
c.) affected father and carrier mother
d.) affected father and unaffected (non-carrier) mother

Explain why biological control methods are generally environmentally superior to chemical pest control methods.

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal response by in order to it's core temperature.

Imagine a person stepping on a pin and pulling his or her foot away. look at the reflex arc of this scenario below. which statement best describes the image? a)the sensory nerve carries the signal from the effector to the interneuron, and the motor neuron carries the signal to the receptor. b)the motor nerve carries the signal from the receptor to the interneuron, and the sensory neuron carries the signal to the effector. c)the sensory nerve carries the signal from the receptor to the interneuron, and the motor neuron carries the signal to the effector. d)the sensory nerve carries the signal from the receptor to the motor neuron, and the interneuron carries the signal to the effector.