Chapter 10 Review Genes and Chromosomes

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Chapter 10 - ReviewGenes and Chromosomes

• Charles Page High School
• Dr. Stephen L. Cotton

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Chapter 10 Review

• What is the exception to the rule that every
  chromosome is part of a homologous pair?
• During crossing-over, what happens?
• The ratio of male to female fruit flies is
  approximately _____.
• Do homologous chromosomes separate during meiosis?

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Chapter 10 Review

• Morgan crossed red-eyed male fruit flies with
  hybrid red-eyed females. What is the genotype of
  the white-eyed offspring?
• Where is a sex-linked gene usually located?
• What is the genotype of a white-eyed male fruit
  fly?

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Chapter 10 Review

• Give some examples of sex-linked traits
• Changes in genes are called _____
• What is the type of mutation in which part of a
  chromosome is reversed in direction?
• In translocation, a part of one chromosome breaks
  off and...

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Chapter 10 Review

• Who reported that not all traits show complete
  dominance?
• The polypeptide chain produced by a gene is not
  changed completely by a ____ mutation
• What is codominance?
• The insertion or deletion of a nucleotide in a
  chromosome is a ___.

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Chapter 10 Review

• A plant having purple flowers crossed with one
  having white flowers yields lavender flowers.
  What is this showing?
• If the gene makeup for the color of an organism
  is written R and R?, you know that color is
  inherited as a ___.
• Animal coat markings are the result of a large
  number of ____.

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Chapter 10 Review

• In mammals, three or more enzymes are usually
  involved in skin color. Skin color illustrates
  _____.
• When a specific protein is not being continually
  produced by a cell, the gene for that protein
  ____.
• What sex of fruit fly shows a small, hook-shaped
  chromosome?

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Chapter 10 Review

• In most cases, a ____ allele codes for an enzyme
  that does not work.
• The genes for sex-linked traits are usually
  located on the ___ chromosome.
• Any chemical change that affects DNA can produce
  a ____ mutation.
• Gene ___ influence gene expression.

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Chapter 10 Review

• All the genes in one linkage group must be
  inherited ____.
• When individuals that are hybrid for two
  different traits are crossed, ___ are produced.
• Was Mendel able to determine where in the cells
  factors that control heredity were located?

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Chapter 10 Review

• In the inheritance of a dominant trait over a
  recessive trait, ____ alleles compensate for
  inactive alleles.
• An organism has an extra copy of a chromosome in
  all its cells. This is an example of ____
• Both alleles are expressed in ____

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Chapter 10 Review

• The expressed allele does not make up for the
  inactive allele in ____
• Which kind of mutation would result if an extra
  nucleotide were inserted into a gene?
• Traits that are expressed by the interaction of
  many genes are said to be ____

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Chapter 10 Review

• A point mutation can best be classified as a ____
  mutation
• Gene linkages may be broken by ___
• Crossing-over is more likely to occur between
  genes that are ____
• A ____ mutation affects sperm cells or egg cells,
  and can be inherited