Pls answer theses guys 1. What 3 main structures make up the CIRCULATORY system in humans?
2. What role does the heart play in the circulatory system (compare it to an object that is man-made)?
3. How does the heart's structure help to do its job? Explain what the sound the heart makes.
4. What are the 4 components that make-up everyone's blood? What does each component do for our bodies?
5. What are the 8 different types of blood that all humans have?

Polydactyly is expressed when an individual has extra fingers and/or toes. assume that a man with six fingers on each hand and six toes on each foot marries a woman with a normal number of digits. having extra digits is caused by a dominant allele. the couple has a son with normal hands and feet, but the couple's second child has extra digits. what is the probability that their next child will have polydactyly? polydactyly is expressed when an individual has extra fingers and/or toes. assume that a man with six fingers on each hand and six toes on each foot marries a woman with a normal number of digits. having extra digits is caused by a dominant allele. the couple has a son with normal hands and feet, but the couple's second child has extra digits. what is the probability that their next child will have polydactyly? 1/8 1/32 3/4 7/16 1/2