Messenger RNA (mRNA)...
a) Is a structural part of a ribosome
b) Brings amino acids to DNA
c) Carries genetic information from the nucleus to the cytoplasm
d) Is a structural part of a chromosome
e) Initiates and directs chemical reactions
Mr. Potato is homozygous dominant (KK), his son, Potato Jr. is heterozygous (Kk). Based on this information, what are the possible genotypes for Mrs. Potato? (Hint: use a Punnet Square).
a) Her genotype is definitely kk
b) Her genotype is either Kk or kk
c) Her genotype is either KK or Kk
d) Her genotype is either KK, or Kk, or kk
e) Mr. Potato cannot be Potato JrΓ’ΒΒs biological father
12. Homologous chromosomes:
a) Are members of different chromosome pairs
b) Are genetically identical
c) Carry genetic information that influences the same traits (same genes but probably different alleles)
d) Are only inherited from the mother
e) Are only inherited from the father.
Γ’ΒΒFitnessΓ’ΒΒ in an evolutionary sense, refers to an individualΓ’ΒΒs:
a) Strength
b) Reproductive success
c) Aggressiveness
d) Size
e) Age at death
The fact that individuals who possess favorable traits are more likely to survive and reproduce than those who possess less favorable traits is the basis for the theory of...
a) uniformitarianism.
b) natural selection.
c) the inheritance of acquired characteristics.
d) catastrophism.
e) the fixity of species.
Even with strong selection, genetic variation of a population can be maintained because:
a) Selection only affects one gene at a time.
b) The effects of many alleles are hidden from selection by the effects of other alleles
c) Mutation constantly adds new alleles at an extremely fast rate.
d) Populations always go extinct before their gene frequencies are dramatically altered.
e) Only a and c
Gene Flow is defined as the:
a) Production of new alleles
b) New musical group in which Adam Levine will be the leading vocalist
c) Exchange of genes between populations
d) differential reproductive success of individuals
e) Process by which a DNA base gets extracted out of the nucleus to initiate the process of protein synthesis.
The basic unit of DNA is a molecule called a: a) Nucleotide
b) Base
c) Thymine
d) Prokaryoticcell e) mRNA
How many bases code for one amino acid? a) one
b) two
c) it depends on what amino acid it is d) three
e) four
Hemophilia is a condition that affects: a) more females than males
b) more males than females
c) females and males equally
d) only children born prematurely
e) individuals with a missing portion of chromosome number 5
A clear example of directional selection is:
a) Darwin finches with deeper and thicker beaks associated to a severe drought b) Sickle cell anemia in regions in which Malaria is endemic
c) Achondroplasticdwarfism
d) Fly halteres becoming fully developed wings after modification of a hox gene e) all of the above
Meiosis is evolutionarily significant because:
a) New combination of alleles can arise through independent assortment and crossing over
22.
23.
24.
25.
26.
b) It is the mechanism by which body tissues are repaired
c) It creates somatic cells that are crucial for our body organs to maintain us alive d) It allows forensics to determine the cause of death of unidentified people
e) none of the above
Homologous chromosomes:
a) Are exact copies of each other and contain exactly the same genetic material
b) Are members of different chromosome pairs
c) Are only inherited from the father
d) carry genetic information that influences the same traits (the same genes), however, each of the homologous chromosomes can contain different versions of the same gene (different alleles).
e) carry genetic information that influences different traits because each of the homologous chromosomes contains completely different genes at very different loci
How many chromosome pairs occur in a normal human somatic cell?
a) 46 b) 23 c) 22 d) 24 e) 45
What is the scientific method? Use bullet points to describe the 4 major components.
How is a hypothesis different from a theory?
List the four major components (described during class) necessary for natural selection to occur [AKA DarwinΓ’ΒΒs Four Postulates] (PDF1-3).
27. Who was Thomas Malthus? In what way(s) Malthus was influential for DarwinΓ’ΒΒs Theory of Natural Selection? Hint: populations vs resources.
29. What amino acids are being coded for by the gene segment provided below? Nucleotide triplets and their corresponding amino acids are:
ACA= Cysteine; AAA=Phenylalanine; TGG=Threonine; CCT=Glycine; GAT=Leucine; ATA=Tyrosine; AGG=Serine; TCT=Arginine
a) Threonine, serine, glycine, tyrosine, leucine, phenylalanine, arginine, cysteine.
b) Tyrosine, leucine, glycine, threonine, arginine, threonine, serine, cysteine.
c) Arginine, cysteine, serine, glycine, threonine, leucine, phenylalanine, tyrosine.
d) Phenylalanine, leucine, tyrosine, glycine, serine, threonine, cysteine, arginine.
e) Phenylalanine, leucine, tyrosine, glycine, threonine, phenylalanine, arginine, serine.
