Name______

Date______

Hour_____

Heredity Review

Chapters 10, 11, 12

Give the correct term for the following:

  1. ______exchange of chromosomal segments between a pair of homologous chromosomes during prophase I of meiosis
  2. ______organism with two different alleles for a specific trait
  3. ______the passing of traits to the next generation.
  4. ______observable characteristic
  5. ______having two copies of each chromosome that is expressed as a result of an allele pair
  6. ______alternative form that a single gene may have for a particular trait
  7. ______strands of DNA separate, serve as templates, and produce DNA molecules that have one strand of parental DNA and one strand of new DNA
  8. ______individual heterozygous for a recessive disorder
  9. ______predicts possible offspring of a cross between two known genotypes

Answer the following:

  1. Where do the parent gametes belong on a Punnett Square? ______

______

  1. A female produces _____ cells for her gametes; a male produces ______cells for his gametes.
  2. The chances of offspring being a boy is ______%. The chances of offspring being a girl is ______%.
  3. Fill in the missing terms.
  4. A ______trait will show if it is present. A ______trait will only show if the other type is not present.
  5. Fill in the following Punnett Squares and give the number of squares that would show the recessive phenotype.
  1. The DNA base adenine pairs with ______and the base guanine pairs with ______.
  2. The backbone of the DNA is made of ______and ______.
  3. If there is a change in an autosome (or somatic cell), will the offspring be affected?
  4. DNA is able to be replicated because of the pairing of ______.
  5. Put the following in order from smallest (1) to largest(5):

______cell

______DNA

______chromosome

______nucleotide

______nucleus

  1. Give 3 examples of mutagens______
  2. Label the mRNA and the tRNA and amino acids in the above illustration.
  1. What is the difference between a point mutation and a frameshift mutation? ______

______

______

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  1. What type of inheritance pattern would cause a red and a blue flower to produce purple offspring? ______
  2. What type of inheritance pattern would cause a red and a blue flower to produce red and blue spotted offspring?
  3. Use the pedigree above to answer the following: If person II-3 has a child, how will person 1-1 be related to that child? ______

What inheritance pattern in shown in the above pedigree?

  1. What percent of the of the offspring in the following Punnett Square will be colorblind (little “c”)? You must complete the Punnett Square!
  1. Give 4 examples of polygenic traits. ______

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  1. Give 2 examples of multiple allelic inheritance. ______

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  1. Does your book discuss more dominant or recessive genetic human disorders?

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  1. In order for a child to inherit a ______genetic disorder, a parent must also have it.
  2. Complete the following Punnett Square. What are the chances of having a child with type O blood?