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

1/9: Which of the following is an example of a biological trait?

  1. Personality
  2. Hair style
  3. Eye color
  4. Regional accent

1/10: What resulted when Mendel crossed a purple flowered plant with a white flowered plant?

  1. Some offspring had purple flowers and some had white flowers.
  2. All the offspring had white flowers.
  3. All the offspring had purple flowers.
  4. All the offspring had pink flowers.

1/12: An Aa individual

  1. Has a homozygous genotype
  2. Has a heterozygous phenotype
  3. Has a heterozygous genotype
  4. Has a homozygous phenotype

1/22: Which is Mendel’s law of independent assortment?

  1. Allele pairs separate independently during meiosis.
  2. Allele pairs separate independently during mitosis.
  3. Different allele pairs are inherited together.
  4. Different alleles of the same gene are found on the same locus.

1/23: What is the probability that the offspring of a cross between a homozygous recessive parent and a heterozygous parent will be homozygous recessive?

  1. 100%
  2. 75%
  3. 50%
  4. 25%

1/24: The term for a cross that involves just one trait, such as pod shape, is called a

  1. Homozygous cross
  2. Test cross
  3. Monohybrid cross
  4. Dihybrid cross

1/25: The fur of cattle can be red, white, or roan (white and red together). Which of the following is true about the type of inheritance associated with this trait?

  1. This is incomplete dominance.
  2. This is codominance.
  3. Mutations have occurred in the individual cattle.
  4. Red is dominant over white.

1/26: A ___________ traces the inheritance of a particular trait through generations.

  1. Karyotype
  2. Genotype
  3. Pedigree
  4. Chromosome map

1/29: Suppose a person is a carrier for a genetic disorder. Which of the following phrases about this person is true?

  1. Does not have the disorder but can pass it on
  2. Will develop the disorder only late in life
  3. Cannot pass the disorder to sons, just daughters
  4. The allele is not passed on due to Y chromosomes inactivation

1/30: Identical twins who are raised apart can have differences that last a lifetime. This is evidence that

  1. Phenotype differences happen through multiple alleles
  2. Genotype can change over time
  3. Environment and genotype interact to affect phenotype
  4. Codominance affects genotype

2/1: Which of the following types of genetic information can be identified easily with a karyotype?

  1. Homologous chromosomes
  2. Dominant traits
  3. Exact locations of genes
  4. Recessive alleles

2/2: Can a male be a carrier for hemophilia?

  1. No he cannot be a carrier because he has only one X chromosome.
  2. No he cannot be a carrier because he has only one Y chromosome.
  3. Yes he can be a carrier because he has both an X and Y chromosome.
  4. Yes he can be a carrier because he has two X chromosomes.

2/6: What term describes a feature that allows an organism to better survive in its environment?

  1. Variation
  2. Species
  3. Adaptation
  4. Mutation

2/7: Which scientist developed a classification system based on similarities?

  1. Georges Buffon
  2. Eramus Darwin
  3. Jean-Baptiste Lamarck
  4. Carolus Linneaus

2/8: How do artificial selection and natural selection differ?

  1. In artificial selection, the environment acts as the selecting agent.
  2. In natural selection, traits that are useful to humans are inherited.
  3. In natural selection, humans act as the selecting agent.
  4. In natural selection, the environment acts as the selecting agent.

2/9: Protein molecules are composed of long chains of _______.

  1. RNA
  2. DNA
  3. Ribosomes
  4. Amino acids

2/12: What can be learned about evolution from DNA sequencing?

  1. DNA sequencing reveals what structures are homologous.
  2. Similar DNA sequences in two organisms indicate that one organism evolved from the other.
  3. Two DNA sequences that are very different indicate that many mutations have occurred.
  4. The more similar the DNA sequences of two organisms are, the more closely related they are.

2/13: What did the variations in the Galapagos finches seem to be well-suited to?

  1. The animals’ size
  2. The animals’ age
  3. The island the animals lived on
  4. The animals’ environment and diet

2/14: Which is the best definition of a species?

  1. A group of organisms that can breed and produce fertile offspring together
  2. A group of organisms that can breed and produce infertile offspring together
  3. A group of organisms that can breed
  4. A group of organisms that look and act similar

2/16: Which of the following describes a population?

  1. Dogs and cats living in Austin, Texas
  2. Four species of fish living in a pond
  3. Dogwood trees in Middletown, Connecticut
  4. Roses and tulips in a garden

2/21: The bottleneck effect occurs when a very large proportion of a population is killed off suddenly. The population faces the risk of becoming extinct. Why is this?

  1. With only a few individuals remaining, there is great genetic variation.
  2. With a large population remaining, there is great genetic variation.
  3. With only a few individuals remaining, there is little genetic variation.
  4. With a large population remaining, there is little genetic variation.

2/23: DNA is a double-stranded nucleic acid formed by millions of linked nucleotides that each contain the sugar deoxyribose, a phosphate group, and one of four nitrogenous bases. How does the structure of DNA allow it to store hereditary information?

  1. The unique order of the nitrogenous bases codes for specific traits in an organism.
  2. Each nucleotide in a strand of DNA codes for one specific trait in an organism.
  3. The sugar deoxyribose codes for all of the specific traits of an organism.
  4. Each strand of DNA codes for one specific trait in an organism.
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