Genetics Review

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Genetics Review
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Question 1

• These are sections of chromosomes that code for a
  trait.
• A gene

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Question 2

• This is a characteristic that can be passed from
  parent to offspring.
• Trait

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Question 3

• Failure of chromosomes to separate during cell
  division is called what?
• Nondisjunction

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Question 4

• This is when a zygote has only 1 copy of a
  chromosome instead of 2.
• Monosomy

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Question 5

• The genetic make-up of an organism is called
  what?
• Genotype

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Question 6

• This type of allele in not fully expressed when
  paired with a dominant allele.
• A recessive.

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Question 7

• What do you call two alleles in a gene pair that
  are identical?
• Homozygous

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Question 8

• What do you call an organism that receives
  different forms of a genetic trait from each
  parent?
• Hybrid

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Question 9

• Mendel called his first generation of offspring
  this?
• First filial

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Question 10

• What do you call it when two different alleles
  for the same trait combine, but neither allele
  wins expression?
• Incomplete Dominance

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Question 11

• Type AB blood is an example of this?
• Codominance

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Question 12

• What do you call an organism that has two
  different alleles for a trait?
• Heterozygous

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Question 13

• What are non-sex chromosomes called?
• Autosomes

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Question 14

• Hemophilia in humans is what type of trait?
• Sex-linked recessive

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Question 15

• What do we call the presence of more than 2
  alleles for a gene?
• Multiple alleles

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Question 16

• What do you call a person that is heterozygous
  for a particular trait?
• A carrier

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Question 17

• What do you call a cross made to study a single
  trait?
• Monohybrid cross