1.1.1 Which one of the following may result in chronic symptoms in humans?
A) A gene critical to chromosome 21
B) Failure of the chromosome pair 12 to segregate during anaphase I
C) Failure of the chromosomes to separate during meiosis II
D) Variation which is induced through mutation
1.1.2 Variation which is induced through mutation - NSC Life Sciences - Question 1 - 2020 - Paper 2
Question 1
1.1.1 Which one of the following may result in chronic symptoms in humans?
A) A gene critical to chromosome 21
B) Failure of the chromosome pair 12 to segregate duri... show full transcript
Worked Solution & Example Answer:1.1.1 Which one of the following may result in chronic symptoms in humans?
A) A gene critical to chromosome 21
B) Failure of the chromosome pair 12 to segregate during anaphase I
C) Failure of the chromosomes to separate during meiosis II
D) Variation which is induced through mutation
1.1.2 Variation which is induced through mutation - NSC Life Sciences - Question 1 - 2020 - Paper 2
Step 1
Which one of the following may result in chronic symptoms in humans?
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Answer
The correct answer is B) Failure of the chromosome pair 12 to segregate during anaphase I.
Step 2
Variation which is induced through mutation.
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Answer
The variation that occurs due to mutations can lead to different phenotypes, which may contribute to the adaptation of organisms.
Step 3
African purple and yellow sunflowers. Both have...
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Answer
The correct answer depicting their genetic makeup is A) genes expressed from different parents.
Step 4
The diagram below shows T. brucei...
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Answer
This information indicates the evolutionary significance of T. brucei to terrestrial organisms.
Step 5
Which ONE of the following is the CORRECT phenotypic ratio of the F1 generation?
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Answer
The correct answer is B) 3 purple : 1 pink, as it represents the dominant and recessive allele expression in the offspring.
Step 6
Which ONE of the following scientists discovered fossils of Homo sapiens and Homo neanderthalensis?
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Answer
The correct answer is C) Louis Leakey, known for his work in human evolution.
Step 7
Which ONE of the following is the CORRECT list of 1, 2 and 3 in the diagram?
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Answer
The correct answer is C) Process 1 - DNA; 2 - RNA; 3 - Protein, illustrating the central dogma of molecular biology.
Step 8
Which ONE of the following characteristics was found undesirable by Murray?
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Answer
The correct answer is B) Plant height and flower diameter, which may have posed challenges in agricultural settings.
Step 9
Evolution is a slow and gradual process.
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Answer
This conveys the concept that changes in species occur over long periods due to accumulated small variations.
Step 10
What type of evidence for evolution is being used in this table?
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Answer
The type of evidence presented relates to comparative anatomy and molecular biology, showcasing genetic similarities and differences.
