The doppler effect using ultrasonic waves of frequency 2.23×106 hz is used to monitor the heartbeat of a fetus. a (maximum) beat frequency of 258 hz is observed. part a assuming that the speed of sound in tissue is 1.54×103m/s, calculate the maximum velocity of the surface of the beating heart.

In the nineteenth century, gregor mendel first determined some basic rules of genetics that have been observed throughout all types of life. no observations have disproved these basic rules of genetics. charles darwin developed the idea of biological evolution around the same time, but he was unaware of mendel’s discoveries in genetics. over a century later, darwin’s idea of evolution was modified in order to incorporate mendel’s rules of genetics along with the other evidence that darwin had used.what is  most likely  the relationship between mendel’s rules of genetics and darwin’s idea of biological evolution? mendel’s genetics states laws that are now part of the theory of biological evolution.biological evolution states laws that are part of mendel’s theory of genetics.mendel’s genetics replaced darwin’s entire concept of biological evolution.biological evolution is a law that explains why all genetics exist