Most scientific investigations use some form of the scientific method. Find out more about the scientific method. Science as defined above is sometimes called pure science to differentiate it from applied science, which is the application of research to human needs.
There are 13 chromosomes in a frog gamete and 26 in a frog body cell.
What is the probability that a human sperm Cell will carry an X chromosome? How many chromosomes does a sperm or egg have?   Sperm and egg cells are haploid cells, meaning they have half the number of chromosomes as all other cells in the body. Humans have 46 chromosomes, so human reproductiveâ¦ cells will have 23.