CourseCourseConceptConcept

IB Biology SL D3.2.4 Phenotype Questions

Use the genotype–phenotype distinction to identify how inherited alleles are expressed as observable characteristics in IB Biology SL D3.2.4.

Syllabus
First assessment 2025
Course
Biology SL
Level
SL

Exam points

  • Define phenotype as an observable characteristic or trait and distinguish it from genotype as the inherited combination of alleles.

IB Biology SL D3.2.4 Phenotype Questions question 1

[Maximum number: 1]

The graph shows a sigmoid population growth curve.

Sigmoid population-size curve against time. X points to its upper plateau; Y marks the early low section before the rapid rise.

The table summarizes the genome size of several organisms.

Genome-size table in base pairs: Helicobacter pylori 1,667,867; Drosophila melanogaster 130,000,000; Oryza sativa 420,000,000; Homo sapiens 3,200,000,000.

Distinguish between the terms genotype and phenotype.

All question bank results loaded