Genetics and Evolution (AHL)
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
A cell with chromosomes is called:
A.Diploid
B.Triploid
C.Haploid
D.Tetraploid
- 2.
Which of these events happens in Telophase I?
A.Sister chromatids are pulled to opposite poles
B.Chromosomes arrive at the poles and the cell usually divides
C.DNA is replicated
D.Bivalents form
- 3.
Which of the following is NOT a source of genetic variation in meiosis?
A.Crossing over
B.Random orientation of bivalents
C.Fusion of gametes from different parents
D.DNA replication in the S phase
Download the worksheet for Genetics and Evolution (AHL) - Meiosis to practice offline. It includes additional chapter-level practice questions.
Inheritance
SubtopicInheritance under Genetics and Evolution (AHL) for Grade 12 IB.
Preview questions (no answers)
- 1.
Which of these traits usually follows a discrete distribution?
A.Human skin color
B.Comb shape in chickens
C.Root length in desert plants
D.Running speed in horses
- 2.
If the Chi-squared value is much lower than the critical value, what can be concluded?
A.The observed data is a good fit for the expected ratio
B.The observed data is not a good fit for the expected ratio
C.The null hypothesis must be rejected
D.The experiment is invalid
- 3.
Which of the following is a classic example of polygenic inheritance in plants investigated by Nilsson-Ehle?
A.Height of pea plants
B.Color of wheat kernels
C.Shape of flower petals
D.Type of chlorophyll
Download the worksheet for Genetics and Evolution (AHL) - Inheritance to practice offline. It includes additional chapter-level practice questions.
Gene pools and speciation
SubtopicGene pools and speciation under Genetics and Evolution (AHL) for Grade 12 IB.
Preview questions (no answers)
- 1.
If a diploid plant with produces a tetraploid offspring through polyploidy, what is the new chromosome number?
A.7
B.14
C.21
D.28
- 2.
Which type of isolation prevents fertilization from ever occurring (pre-zygotic)?
A.Hybrid inviability
B.Hybrid sterility
C.Temporal isolation
D.Hybrid breakdown
- 3.
What is the main source of new alleles in a gene pool?
A.Natural selection
B.Non-random mating
C.Genetic mutation
D.Geographic isolation
Download the worksheet for Genetics and Evolution (AHL) - Gene pools and speciation to practice offline. It includes additional chapter-level practice questions.