| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.SL.TZ1.15 |
| Level | Standard level | Paper | Paper 1 | Time zone | Time zone 1 |
| Command term | Question number | 15 | Adapted from | N/A |
Question
What helps make the genome of each human unique?
Markscheme
D
Examiners report
Syllabus sections
- 22M.1.HL.TZ1.12: Which process occurs in meiosis but not in mitosis? A. Attachment of spindle fibres to the...
- 16N.1.HL.TZ0.13: What description is matched with the correct phase in meiosis I?
- 17M.1.SL.TZ1.16: During which phase of the first division of meiosis can non-disjunction take place and what...
- 17M.1.SL.TZ2.14: Which is a characteristic of the pairs of sister chromatids that are visible during...
- 17M.1.SL.TZ1.14: The micrographs show four different phases from meiosis II. What is the correct order? A....
- 18M.2.HL.TZ2.3a.i: The micrograph shows a plant cell of Lilium grandiflorum during meiosis. Identify, giving...
- 17M.1.SL.TZ2.27: The bacterium Neisseria gonorrhoeae causes infections related to the human reproductive...
- 18M.1.SL.TZ2.14: What happens during meiosis I and meiosis II?
- 19M.2.HL.TZ1.2c.ii: State the haploid number for this nucleus.
- 18M.1.HL.TZ1.35: What forms when two different chromatids of the same homologous pair cross over? A. Daughter...
- 17M.1.SL.TZ1.21: Cladograms can be created by comparing DNA or protein sequences. The cladogram on the left is...
-
19M.1.SL.TZ2.13:
The graph shows the incidence of trisomy resulting from non-disjunction in pregnancies at different maternal ages.
[Source: Center for Disease Control]
What can be inferred from the graph?
A. The incidence of three copies of a chromosome increases directly in proportion with the age of the mother.
B. The incidence of three sets of chromosomes increases from age 20.
C. The incidence of three copies of a chromosome increases the most from age 35.
D. The incidence of three sets of chromosomes increases the most from age 30.
- 21M.1.SL.TZ1.19: Which statement applies to meiosis and mitosis? A. Meiosis occurs in a greater number of...
-
21N.2.SL.TZ0.6b:
Explain the need for halving the chromosome number during a sexual life cycle and how this is done.
- 17M.2.HL.TZ1.1f.ii: Suggest a reason for the greater expression of the gene for the urea transporter after an...
-
19M.1.SL.TZ1.14:
At which stage of meiosis are bivalents formed?
A. Interphase
B. Prophase I
C. Prophase II
D. Metaphase II
-
20N.2.SL.TZ0.6b:
Outline what occurs in cells in the first division of meiosis.
- 21N.1.SL.TZ0.14: Down syndrome can be detected before birth by chorionic villus sampling. From where are the...
-
21M.2.SL.TZ2.2c:
Distinguish between the outcomes of a cell dividing either by mitosis or meiosis.
- 17M.2.SL.TZ1.1c: Estimate how much smaller drilled oysters raised in seawater at a high CO2 concentration were...
- 18M.1.HL.TZ2.17: Which process could cause non-disjunction if it occurred during meiosis? A. Sister...
- 22M.1.SL.TZ1.15: What is produced by meiosis in a cell of a male animal? A. Four gametes, each with the same...
- 22M.2.SL.TZ1.7b: Distinguish between the processes of meiosis and mitosis.
