Unit 3: Reproduction, Heredity & Evolution
Topic 1: Reproduction
- Asexual Reproduction
- no sperm and egg needed
- one parent
- exact copy of the organism is created
- some animals and plants
- bacteria and protists
- cell division: mitosis
- Sexual Reproduction
- combining of genes from two parents
- sperm cell and egg cell combine
- animals and plants
- Mitosis - division of body cells for growth and repair
- identical cells are produced
- 100% of DNA is the same (46 chromosomes in humans)
- same number of chromosomes in all cells produced
- order of stages: PMAT (prophase, metaphase, anaphase, telophase)
- Meiosis - division of one cell into 4 sex cells
- produces sperm or egg cells
- cells that are produced are NOT identical
- cells have half the number of chromosomes (23 in humans)
Topic 3: Genetics
- Vocabulary
- Heredity
- Genetics
- Inheritance
- Allele
- Dominant allele
- Recessive allele
- Homozygous
- Heterozygous
- Genotype
- Phenotype
- Punnett square - play this fun game to help you review!
Topic 5: Evolution
- Change Over Time
- Natural Selection, survival of the fittest
- Charles Darwin
- Evidence for Evolution
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