CourseCourseConceptConceptDocsDocuments

IB Biology HL D1.3.10 Hl Conserved Sequences Questions

Analyse alignment identity symbols and consecutive matching residues to locate the longest conserved protein region in IB Biology HL D1.3.10.

Syllabus
First assessment 2025
Course
Biology HL
Level
HL

Exam points

  • Identify the longest conserved stretch by locating consecutive amino-acid positions that are identical in the aligned proteins.
  • Use alignment identity symbols and the compared protein sequences to report the conserved region across the named species.

Learn this topic

Study D1.3.10 (HL)—Conserved sequences conceptsOpen the corresponding Concept lesson for explanations, examples and exam connections.

IB Biology HL D1.3.10 Hl Conserved Sequences Questions question 1

[Maximum number: 1]

Golden rice (Oryza sativa, GR) is the generic name given to genetically modified rice that produces beta-carotene (provitamin A). Golden rice was created by transforming rice with the gene coding for the PSY protein (phytoene synthase) from daffodil (Narcissus pseudonarcissus) or from corn (Zea mays).

The picture shows variations of rice.

A White wild-type rice

B Yellow Golden rice expressing the gene coding for PSY from daffodil

C Orange Golden rice expressing the gene coding for PSY from corn

Figure for Question IB Biology HL D1.3.10 Hl Conserved Sequences Questions question 1 — IB Biology HL

A bioinformatics analysis was performed on the protein PSY transcribed from the gene from corn and from daffodil to obtain the sequence alignment.

On the alignment, identify the longest part of the sequence where the consecutive amino acids are the same.

Table for Question IB Biology HL D1.3.10 Hl Conserved Sequences Questions question 1 — IB Biology HL
All question bank results loaded