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Work on the following questions this period. If not finished today, they are to be completed for homework this weekend. List some differences between sexual reproduction and asexual reproduction. What is conjugation? Give a description of hermaphrodites along with examples. Define aphids and zygotes. What is the chromosome combination for men and women? (X and Y) How do reproductive cells divide? List the differences between reproductive cells and somatic cells. Give examples for each. What are the difference between internal fertilization and external fertilization. Explain how meiosis works and list differences between meiosis and mitosis. What are homologous chromosomes? What is nondisjunction? Give examples of nondisjunction disorders. Describe the differences between and embryo and a fetus. Describe spores, seeds, eggs, marsupial mammals and placental mammals. Give an example for each. What is conception? What part of the sperm penetrates the egg and what happens to the rest? Give details of the three trimesters of embryo-fetus development. Define amniocentesis (don’t forget to describe its function), umbilical cord and placenta. Define dominant, recessive, homologous chromosomes, heterozygous, genes and homozygous.