Genetics
Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.
Preview questions (no answers)
- 1.
Which organism's genome consists of approximately 4.6 million base pairs?
A.T2 phage
B.Escherichia coli
C.Drosophila melanogaster
D.Homo sapiens
- 2.
What refers to the specific position of a gene on a chromosome?
A.Allele
B.Locus
C.Genome
D.Centromere
- 3.
Which genetic material is described as 'naked' DNA?
A.DNA in the nucleus of a plant cell
B.DNA in a bacterial cell
C.DNA wrapped around histones
D.DNA found in a human skin cell
Download the worksheet for Genetics - Genes to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Which statement about alleles is correct in the context of chromosomes?
A.Alleles are found on different loci on the same chromosome
B.Alleles are different versions of the same gene
C.Alleles are only found in prokaryotic DNA
D.Alleles are the proteins that wrap around DNA
- 2.
Which of the following can be determined from a human karyogram?
A.The eye color of the individual
B.The presence of specific gene mutations like sickle cell
C.The biological sex of the individual
D.The exact age of the individual
- 3.
What is the term for the two identical copies of a chromosome formed after DNA replication?
A.Homologous chromosomes
B.Sister chromatids
C.Autosomes
D.Plasmids
Download the worksheet for Genetics - Chromosomes to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
Which of the following structures attach to the centromeres to move chromosomes during meiosis?
A.Nuclear envelope
B.Spindle fibers
C.Chiasmata
D.Mitochondria
- 2.
What is the end product of Meiosis I?
A.Four haploid cells
B.Two diploid cells
C.Two haploid cells
D.One diploid zygote
- 3.
Which of the following describes the chromosomes at the beginning of Meiosis II?
A.They are in homologous pairs
B.They consist of two sister chromatids joined by a centromere
C.They are single-stranded and non-replicated
D.They have already been halved in number compared to the start of Meiosis I
Download the worksheet for Genetics - Meiosis to practice offline. It includes additional chapter-level practice questions.
Preview questions (no answers)
- 1.
In humans, the chromosome contains a specific gene that triggers male development. What is this gene called?
A.SRY gene
B.HbS gene
C.CFTR gene
D.ABO gene
- 2.
Which of the following is NOT a characteristic of a dominant allele?
A.It is expressed in a heterozygote
B.It mask the effect of a recessive allele
C.It is always the most common allele in a population
D.It is represented by an uppercase letter
- 3.
Which type of variation is usually represented by a bell-shaped curve (normal distribution)?
A.Continuous variation
B.Discrete variation
C.Single-gene variation
D.Discontinuous variation
Download the worksheet for Genetics - Inheritance to practice offline. It includes additional chapter-level practice questions.
Genetic modification and biotechnology
SubtopicGenetic modification and biotechnology under Genetics for Grade 12 IB.
Preview questions (no answers)
- 1.
What describes the relationship between the clone and the donor of the somatic cell nucleus in SCNT?
A.They are genetically different
B.They are genetically identical
C.The clone has half the DNA of the donor
D.The clone has no DNA
- 2.
Which of the following is a step in the production of a DNA profile?
A.Adding amino acids to the DNA
B.Amplification of DNA using PCR
C.Changing the genetic code of the sample
D.Removing all the phosphate groups
- 3.
In the gene transfer process, once the human gene is inserted into the bacterial plasmid, the plasmid is now called:
A.A mitochondrial plasmid
B.A recombinant plasmid
C.A denatured plasmid
D.A cloned plasmid
Download the worksheet for Genetics - Genetic modification and biotechnology to practice offline. It includes additional chapter-level practice questions.