Genes and Inheritance

• What is Inherited Variation?


  Differences in traits that are passed down from parents to offspring through genes.
• What are 5 examples of Inherited Variation?


  Eye colour, Hair colour, Lobed or lobeless ears, ability to roll tonge
• What is Environmental Variation?


  Differences in environmental factors such as temperature, humidity, and light that can affect organisms.
• What is the process of the Menstrual Cycle?


  The menstrual cycle prepares the female body for pregnancy by causing eggs (ova) to mature and be released. The process lats for 28 days.
• What is fertilisation?


  The fusion of a sperm and an egg to form a zygote.
• What are the three important structures in the uterus during gestation?


  fluid sac, umbilical cord, placenta
• What is Discontinuous Variation?


  Discontinuous Variation refers to distinct, non-overlapping categories or traits within a population.
• What is continuous variation?


  Continuous variation refers to the range of values that a trait can take on within a population, with no distinct categories or groups.
• What is an Adolescence?


  Transition period
• What is the physical changes that happen between the ages of 9-14?

  Puberty
• What is reproduction?


  Reproduction is the biological process by which new individuals of the same species are produced.
• What are the two types of reproduction?


  The two types of reproduction are sexual reproduction and asexual reproduction.
• What happens to a species if they dont reproduce?


  Extinction
• Explain a monthly period?

  Menstruation
• Reproduction in plants?

  Pollination and fertilization.
• Where does the foetus develop?


  Uterus
• How does the foetus develop?


  It relies its mother for protection, nutrients and oxygen
• What is the purpose of the placenta?


  Nutrient and oxygen exchange.
• Sperm


  A male gamete (reproductive cell) that carries half of the genetic material.
• Egg


  A female gamete (reproductive cell) that carries the other half of the genetic material.
• Zygote


  The resulting cell that contains the combined genetic material from the sperm and egg, marking the beginning of a new individual.
• Fertilisation


  The process of combining genetic material from two parents to create a new individual.
• Where is sperm made?

  Testes
• What are the two gametes?

  Sperm and egg