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Get your plicker card and answer the following question (based on the date):

1/12: If Mendel had not examined the ___ generation, he would not have discovered his theory of segregation.

  1. P
  2. F1
  3. F2
  4. More than one of these

1/22: The most accurate description of an organism with genotype AaBb is

  1. Heterozygous
  2. Homozygous dominant
  3. Homozygous
  4. Homozygous recessive

1/23: In horses, B = black coat, b = brown coat, T = trotter, and t = pacer. A black trotter that has a brown pacer offspring has which of the following genotypes?

  1. BT
  2. BbTt
  3. bbtt
  4. BBtt

1/24: What is the relationship between the F1 and F2 generation?

  1. F1 generation are the parents of the F2 generation.
  2. There is no relationship between the two generations.
  3. F2 generation are the parents of the F1 generation.
  4. F1 generation are the males while the F2 generation are the females.

1/25: Color blindness is an x-linked trait in humans. If a color blind woman marries a man with normal vision, the children will be

  1. All color blind daughters, but normal sons
  2. All color blind sons but carrier daughters
  3. All normal sons but carrier daughters
  4. All color blind children

1/26: Which is not a chromosomal abnormality?

  1. Inversion
  2. Extra chromosomes
  3. Translocation
  4. Crossing over

1/30: A karyotype shows a portion of chromosome #5 turned upside down. This is most likely due to a

  1. Translocation
  2. Inversion
  3. Deletion
  4. Duplication

1/31: Which of the following statements about heredity is true?

  1. An individual’s genotype is the physical manifestation of a genetic trait.
  2. An individual with matching alleles for a given trait is said to be heterozygous for that trait.
  3. For any given gene, there can only be two different alleles.
  4. An individual’s phenotype is the physical expression of the trait associated with a particular gene.

2/1: It is far more common to find human genetic disease caused by _______ alleles than by __________ alleles because

  1. Recessive, dominant, harmful recessive alleles can survive in the heterozygote without any pressure against them
  2. Dominant, recessive, dominant alleles become dominant because they aid the survival of the organism carrying them
  3. Recessive, dominant, even when homozygous, recessive alleles usually do not cause as much damage as dominant alleles
  4. None of these

2/6: Who developed the theory of evolution by natural selection?

  1. Alfred Wallace
  2. Charles Darwin
  3. Jean Baptiste Lamarck
  4. Charles Lyell

2/9: Natural selection states that

  1. A change in a species occurs over time
  2. Nature selects the variations within a species that are most useful for survival
  3. Fitness is an organism’s ability to survive and produce fertile offspring
  4. All of the above

2/12: Which of the following statements is correct?

  1. Individuals do not evolve, genes do evolve.
  2. Individuals do not evolve, populations do evolve.
  3. Populations do not evolve, individuals do evolve.
  4. Populations do not evolve, species do evolve.

2/13: What is the frequency of an R allele in a population if the frequency of the r allele at the same locus is 0.4?

  1. 0.16
  2. 0.8
  3. 0.6
  4. 1.0

2/14: Which condition will not keep a population in equilibrium?

  1. No genetic drift can occur.
  2. Immigration but emigration can occur.
  3. No gene flow can occur.
  4. Random mating must occur.

2/16: The greyhound dog was originally used to hunt the fastest of game, fox and deer. The breed dates to ancient Egypt. Early breeders of greyhound dogs were interested in dogs with the greatest speed. Breeders carefully selected the fastest dogs from a group of hounds. From their offspring, the greyhound breeders again selected those dogs that ran the fastest. By continuing selection for those dogs that ran faster than most of the hound dog population, they gradually produced dogs that could run up to 64 km/h (40 mph). This application of artificial selection most resembles

  1. Stabilizing selection
  2. Genetic engineering
  3. Directional selection
  4. Disruptive selection
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