Reproduction

• Which cell division does asexual reproduction rely on?

  Mitosis
• How are gametes formed?

  Meiosis
• A gamete is a..

  sex cell
• Gametes in plants

  Egg and pollen
• 1 difference between asexual and sexual reproduction

  Asexual - no genetically identical offspring, Sexual - genetic variation
• Organ that produces egg cells

  Ovaries
• Organ that produces sperm cells

  Testes
• How many divisions happen in meiosis

  2
• Process where egg and sperm fuse

  fertilisation
• how many chromosomes are there in human gametes?

  23
• Gametes in animals

  egg and sperm
• Cells produced by meiosis

  4 genetically DIFFERENT daughter cells
• Cells produced by mitosis

  2 genetically IDENTICAL daughter cells
• Name of genetic material in the nucleus

  DNA
• whats a gene?

  small section of DNA
• whats the function of a gene?

  code for a particular sequence
• what is a genome?

  entire genetic material of an organism
• What is a chromosome?

  contains coiled up DNA and proteins
• what is an allele?

  different version of the same gene
• dominant meaning?

  only needs 1 allele to see phenotype
• Recessive meaning?

  needs 2 copies of allele to see phenotype
• Homozygous meaning?

  2 identical alleles
• Heterozygous meaning?

  2 different alleles
• what is a genotype?


  genetic makeup of an organism
• Genotype of a female?

  XX
• Genotype of a male?

  XY
• What is polydactyl?

  having extra fingers or toes
• Is polydactyl dominant or recessive?

  Dominant
• What is cystic fibrosis?

  when sticky mucus builds up in the lungs
• Is cystic fibrosis dominant or recessive?

  Recessive
• 1 concern for screening embryos...

  miscarriages, ethical/religious concerns, expensive
• 1 benefit for screening embryos

  Know if a child will have a disorder