IB myp 4-5 Biology – Practice Questions- All Topics
Topic :Biotechnology-Genome mapping and application
Topic :Biotechnology– Weightage : 21 %
All Questions for Topic : Genetic modification,Cloning,Ethical Implications,Genome mapping and application,3D tissue and organ printing
Question
Scientists have been working to map the genome of different organisms for many years. Surprisingly, the rice genome consists of approximately 40000 genes on 12 chromosomes. Suggest the meaning of the term gene. (1 mark)
▶️Answer/Explanation
Ans:
a section of a chromosome or DNA and that codes for a protein or trait
Question:
What does the data given here suggest about the relationship between the species in the table?
▶️Answer/Explanation
Ans: Differences in base sequence:
Adoxophyes honmai to Diatraea saccharalis 41
Adoxophyes honmai to Ostrinia furnacalis 6
Adoxophyes honmai to Ostrinia nubilalis 13
Diatraea saccharalis to Ostrinia furnacalis 35
Diatraea saccharalis to Ostrinia nubilalis 38
Ostrinia furnacalis to Ostrinia nubilalis 17
So Diatraea honmai is most dissimilar in base sequence to the other three species; and is not closely related to any of them; the other three species are closely related to each other; as they have many similarities in base sequence.
Question:
Based on the table, which two species are the most closely related?
▶️Answer/Explanation
Ans: Adoxophyes honmai and Ostrinia furnacalis are most similar; Adoxophyes honmai is more similar to both Ostrinia species despite them being in the same genus.