Genetic variation

• What can cause genetic variation?

  1. mutations: a change in the DNA, can from new allele combinations , can only be passed in if in gametes
  2. recombination: forms new allele combinations, crossing over, parents alleles are rearranged in offspring, genetic engineering
  3. hybridization: crossing of 2 different species, occurs when individuals can’t find mate
• Why is genetic engineering important?

  -Favorable traits in male and females will enhance reproductive success

  -Traits that are beneficial will become more common while traits that aren’t will become less common