Target: 10 questions in 10 minutes

1. The image shows a human karyogram.

Human_male_karyotpe
When pairing up chromosomes to make a karyogram which feature(s) is/are used?
  • A. Size of chromosome only
  • B. Size of chromosome and position of the centromere
  • C. Size of the chromosome, position of the centromere and the banding
  • D. Size of chromosome and banding
2. According to the Linnaean classification system, what is the defining characteristic of a species?
  • A. Organisms that can interbreed and produce fertile offspring
  • B. Organisms that share a similar physical appearance and morphology
  • C. Organisms that occupy the same geographic region
  • D. Organisms that have the same genetic code

3. The biological concept of species does not work well for which scenario(s)?

I. In cases of asexual reproduction
II. Mating of lions and tigers to produce ligers
III. Horizontal gene transfer in prokaryotes
  • A. I only
  • B. II only
  • C. I and III only
  • D. I, II, and III

4. The image below shows skulls of extinct hominids.

Comparison_of_skull_features_of_Homo_naledi_and_other_early_human_species

 Chris Stringer, Natural History Museum, UK
CC-BY-SA 4.0
Which statement applies to the images above?
  • A. Specimens belong to the same species
  • B. Specimens are from the same genus but different species
  • C. Specimens are from the same genus and species, but different sub-species
  • D. Specimens belong to the same species but different genera

5. The image shows an electron microscope image of part of a lung cell.

electron microscope image of part of a lung cell
Where would you find the genome of this cell?
  • A. I only
  • B. I and II only
  • C. II and III only
  • D. I, II, and III

6. The graph below shows the genome size of different organisms.

electron microscope image of part of a lung cell

 Abizar at English Wikipedia
CC-BY-SA 3.0
Which statement is true of the graph?
  • A. The x-axis shows the number of genes in the genome
  • B. There is a correlation between complexity of the organism and genome size
  • C. There is a significant difference in genome size between prokaryotes and eukaryotes
  • D. The x-axis shows the number of base pairs in the genome
7. There is a hypothesis that an ancestral fusion event between two chromosomes led to the formation of chromosome 2 in humans. Which of the following does not apply?
  • A. Similarities in the banding patterns between chimpanzee chromosomes 2A and 2B and human chromosome 2 support this hypothesis.
  • B. Finding remnants of two centromeres on chromosome 2 supports this hypothesis.
  • C. All other known members of the Hominidae family having 24 pairs of chromosomes supports this hypothesis.
  • D. Direct observation of the fusion event is required to validate this hypothesis.

8&9: The image below shows a simplified overview of DNA barcoding.

DNA barcoding overview

 LarissaFruehe
CC-BY-SA 4.0

8. Which row correctly identifies processes X and Y?

  X  Y
A RNA extraction Primer selection
B PCR Gel electrophoresis 
C Annealing PCR
D DNA Extraction  DNA sequencing 
9. In which real-world scenario would DNA barcoding be particularly useful?
  • A. Tracking the origin and supply chain of food products
  • B. Diagnosing genetic disorders in human patients
  • C. Determining the paternity of a child
  • D. All of the above

10. The image shows male and female stag beetles.

DNA barcoding overview

Using the dichotomous key below, identify the phylum to which the stag beetle belongs.

Step 1    Body segmented:   go to step 2
Body not segmented:  go to step 3
Step 2 With jointed appendages:  Phylum Arthropoda
Without jointed appendages:  Phylum Annelida
Step 3

Sponge like body present:  Phylum Porifera                                     
Sponge like body absent:  Phylum Mollusca
Muséum de Toulouse
CC-BY-SA 4.0
  • A. Phylum Arthropoda
  • B. Phylum Annelida
  • C. Phylum Porifera
  • D. Phylum Mollusca