BLG1501 Assignment 2
Unique number: 641006
Due Date: Monday, 20 April 2026, 5:00 PM
INSTRUCTIONS
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If it is found that you have use AI to generate your answers you will get zero for your answers.
No plagiarism. Always paraphrase your answers where possible (do not copy directly from the
source).
At the end of your assignment list all the sources you have used (Reference list).
Kindly submit one pdf file.
QUESTION 1
A purple flower (P) is dominant, and the white flower (p) is recessive. Use the Punnet square to
predict the results of this monohybrid cross between a purple homozygote flower and a white
homozygote flower and state the phenotypic and genotypic ratios of the F2 generation.
[20]
QUESTION 2
2.1 Tabulate the differences between prokaryotic and eukaryotic cells.
(14)
2.2 Write explanatory notes on the structure and function of ribosomes.
(10)
[24]
QUESTION 3
List the phases of meiosis I and meiosis II and describe the events characteristic of each phase.
[25]
QUESTION 4
4.1 Distinguish between parasitism, mutualism, and commensalism and give examples of each
symbiotic relationship
(9)
4.2 Briefly explain the four major threats to biodiversity and give an example of each.
©
UNISA 2026
(12)
[21]
TOTAL: 90 marks