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Chapter 6 Test

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5 Written Questions

5 Matching Questions

  1. phenotype
  2. sex-linked trait
  3. do sex linked traits show up more in males or females?why?
  4. what does TT stand for?
  5. purebred
  1. a TT stands for homozygous dominant and purebred dominant.
  2. b males because they only have one chromosme to carry the recessive allele.
  3. c type of organism whose ancestor are in a genetic uniform.
  4. d a trait that is determined by a gene found on one of the sex chromosomes, such as the X chromosome or the Y chromosome in humans.
  5. e collection of all an organisms physical characteristics.

5 Multiple Choice Questions

  1. always a 50% chance for a girl or guy
  2. the liklihood of an event occuring is not influenced by the outcome of earlier events.
  3. - he looked at different traits by cross-pollinating the pea flowers.
  4. - he founded the principle of dominance that states one gene in a trait can prevent the other gene from being expressed.
  5. -the two genes for each trait separate when the gametes are formed.

5 True/False Questions

  1. what is a karyotype?all are homologous
    22 pairs of autosomes and 1 pair of sex chromosomes

          

  2. never mindnever mind

          

  3. what is a poygenic trait?-trait that is determined by the combinded effect of one or more genes. ex. human skin, hair, height, and eye color.

          

  4. traitorganism that contains both dominant and recessive alleles.

          

  5. genotypecollection of all an organisms physical characteristics.

          

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