Unit A

Unit A

Reproduce
1. Asexual
  1. Budding
  2. vegative reproducion
  3. spore production
  4. binary fission
    1. splitting of 2 cell
  5. same DNA
  6. mitosis
    1. produce 2 new cells with the same number of chromosomes
      1. example: cell repair.
2. Sexual
  1. Divided DNA
  2. half DNA egg cell/ sperm cell
  3. meiosis
    1. produces cells with only half the normal DNA
Cell
1. egg cell
2. spream cells
3. flization
  1. egg cell meets the sperm cell
4. gamete
5. Embroy
  1. when the baby forms
6. cleveage
  1. 1st division of a cell
7. zgato
  1. babys cells muiplys
8. DNA
classifying species
1. kingdom, phylum, class, order, family, genus, species
Ecosystems
1. population
2. commuity
3. species
4. niche
  1. organism role
5. paralism
  1. one benefits one is harm.
6. commistlism
  1. one benfits one is not harmed or benfits
7. mutalism
  1. they both benefits
8. symbiosis
  1. association of members of different species
DNA
1. contuios
  1. range of forms
2. discete
  1. has or not
3. heritable
  1. passed down
4. non-heritable
  1. not passed down
5. deoxyribonucleic acid
6. Genetic code
  1. based on arranging the four chemical letters into words or instructions
  2. guanine (orange)
  3. cytosine (blue)
  4. adenine (green)
  5. thiamine (violet)
  6. Chromosomes: package of DNA
    1. humans have a complete set of 46 chromosomes
7. gene
  1. an single untouched segment of DNA
8. alleles
9. a dog can be used as an example for gene, alleles and chromosomes
Traits
1. Purebred
  1. example - an cat that has RR or rr alleles
2. hybrid
  1. produced by crossin 2 purebeds ( Rr or rR)
3. Dominant traits
  1. trait always shows through
4. Recessive traits
  1. not physcailly expressed by offspring
5. incomplete dominance
  1. when a dominant allele is not fully completed and mix with the recessive allele
human effect on envoirment
1. extinction
  1. the disappearance of every individual of an specie
  2. reasons for extinction:: natural disaster, lack of resources ,to much hunting, people built on there land
2. extirpation
  1. an local extinction
3. overspecialization
  1. adapte to much to one community cant live any where else
4. non-native species
  1. an specie that from somewhere else
Selecting
1. artificial selection
  1. selecting and breeding and individual with desirable traits
2. biotechnology
  1. changing the genetics of a specie
3. cloning
  1. take the DNA from one plant and making an identical plant
4. in vitro fertilization
  1. take spream from male bull. taking egg cell from female cow. create embryos and implantin different cows
5. artificial insemination
  1. spream harvested and implant into muitpal cows
    1. advantage spream can be in many different places at one time
6. genetic engineering
  1. technology that directly alters the DNA

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	Created by Joyce Bukmeier about 9 years ago