In pea plants, yellow seed color (Y) is dominant to green seed color (y). Two yellow plants of unknown genotype are crossed. The resulting F1 generation has a 3:1 phenotypic ratio of yellow to green seeds. What must be the genotypes of the parent plants for this cross?

The polio virus can cause skeletal muscle paralysis by destroying neuron cell bodies. what area of the spinal cord is destroyed

Which of these would most likely be a stimulus that would cause the body to initiate feedback mechanisms a.) normal body temperature in an arctic environment b.) normal boy temperature in a tropical environment c.)light physical activity d.)low blood sugar

Earths energy sources include both renewable and nonrenewable resources. name at least three sources of energy that could be used in your house. then describe the ideal energy source for generating most of your homes electricity, and explain why you chose that source. can someone give me some ideas, i’m kinda confused.