NR 1: Fill in the blanks with the numbered phrases below.
The nucleus of a human oocyte would normally be __________ and contain _________________
genetic combinations that its parent cell. This process is known as ________________.
1.
2.
3.
4.
Different
Diploid
Fertilization
Haploid
__________
5.
6.
7.
8.
__________
Identical
Meiosis
Mitosis
Nondisjunction
__________
NR 2: The sequence of DNA nucleotides codes for specific proteins in the body. Fill in the blanks of the
sentence below describing this process.
mRNA is created through the process of ________________ which happens in the _____________ of a
cell. This code then undergoes _____________________ in the _____________________ of the cell to
create a protein.
1.
2.
3.
4.
DNA
Transcription
Translation
Cytoplasm
__________
5. Ribosome
6. Nucleus
7. Nondisjunction
__________
___________
__________
1. Which of the following rows correctly matches a DNA triplet with its corresponding mRNA codon,
amino acid, and tRNA anticodon?
Row
A
B
C
D
DNA Triplet
TCG
CAT
GAT
UGU
mRNA codon
AGC
GUA
CTA
ACA
Amino Acid
Serine
Valine
Aspartate
Threonine
tRNA anticodon
UCG
CAT
GAU
UGU
2. Polydactyly, the anatomical abnormality of having more than the normal number of digits, is a
common physical abnormality in cats. While normal cats have 5 toes on their front paws, polydactyl cats
can have as many as 7 toes. This mutation is found on the dominant allele. If the allele frequency for
polydactyly is 0.02, what percentage of cats will be polydactyl?
A.
B.
C.
D.
0.04%
96%
4%
74%
3. In areas where moose and caribou share habitat, they are both preyed upon by wolves. The
population cycle of the moose is affected by the presence of a second prey species, the caribou.
A reasonable prediction based on these predator-prey relationships is that
A. Predator species would not show population changes caused by density-dependent factors.
B. An area would have the same carrying capacity for moose as it has for caribou, even though
each species has different food preferences.
C. Wolf and prey populations would decline as the same diseases spread through the three
populations.
D. Low numbers of caribou would cause wolf starvation if the moose population was also low.
4. Coat colour in New York Sewer Rats is dependent on members of a series of multiple alleles.
The hierarchy of dominance is:
A+
full colour
A2
Garbage grey
A3
Rotten red
If a heterozygous full colour male was crossed with a rotten red female, what would be the most likely
phenotypes of their offspring?
A.
B.
C.
D.
All full colour
Some full colour, some garbage grey
Some garbage grey, some rotten red
all garbage grey
Use the following information to answer the next question.
5. These graphs best represent which biological concept?
A.
B.
C.
D.
Symbiotic relationships
Intraspecific competition
Gause’s principle
Predation
6. Many elk live in and around an 80 km2 area that includes the Jasper town site. The elk population of
this area at the beginning of a study year was 500. If there were 35 births and 5 deaths throughout the
year, what was the per capita growth rate for the elk population during that year?
A. 0.03
B. 0.06
C. 6
D. 30
WR 1
Tay-Sachs disease is hereditary diseases that kills 1 in 360 000 individuals in the general population, but
1 in 4800 among the Ashkenazi Jews. Individuals that are homozygous for the defective allele have TaySachs disease and die at an early age. Studies suggest that heterozygous individuals have a higher
survival rate against tuberculosis that the rest of the population. Biochemical tests can be done to
determine if parents are carriers.
The current population of Ashkenazi Jews is said to be based on an original population of 350 people. If
Hardy-Weinberg law was applied, how many of the people in the original population would be resistant
to tuberculosis?
WR 2
Lac la Biche Lake is one of the largest lakes in Alberta, covering an area of 234 km2. Over the past
century, intensive commercial and sport fishing practices have threatened the walleye fishery of the
lake, and it ia now being closely monitored and managed. Fish surveys conducted in the lake in 2003
estimated the adult walleye population density to be 12 fish/km2. This was far below the necessary
density of 214 fish/km2. How many fish were in the lake in 2003, and how many are necessary to sustain
a healthy population?
WR 3
a) If the coding triplets of DNA are CGT ACG GTA TTC, what will the mRNA codons be if the
triplet coding for cysteine was removed?
b) Give an example of a silent mutation of the original DNA.
WR 4
In order for Hardy-Weinberg equilibrium to be true, what conditions need to be in place?