1. Draw a Punnett square which shows the inheritance of the sex chromosomes. Represent the female sex chromosomes with XX and the male sex chromosomes with XY. Guide Questions: a. What will be the sex of a child produced when an egg is fertilized by a sperm that has a Y chromosome?. b. What type of sperm must fertilize an egg to result in a female child? c. Based on this Punnett Square, what percent of children would you expect to be male?

Q: chromosomes

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Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.