Podcast
Questions and Answers
What causes Sickle Cell Anaemia?
What causes Sickle Cell Anaemia?
- A recessive gene mutation affecting melanin production
- Abnormal separation of chromosomes during Anaphase I
- An extra chromosome 21
- A faulty haemoglobin molecule due to a gene mutation (correct)
How does Albinism affect individuals?
How does Albinism affect individuals?
- By causing abnormal red blood cells
- By blocking capillaries
- By affecting skin, hair, and eye color due to a melanin deficiency (correct)
- By altering chromosome numbers
Which phase of cell division can result in chromosome aberrations like Down syndrome?
Which phase of cell division can result in chromosome aberrations like Down syndrome?
- Telophase II
- Anaphase I (correct)
- Anaphase II
- Metaphase I
What is the cause of Down syndrome?
What is the cause of Down syndrome?
How do chromosomal aberrations affect gametes?
How do chromosomal aberrations affect gametes?
Which type of mutation is characterized by changes to the DNA responsible for producing specific proteins?
Which type of mutation is characterized by changes to the DNA responsible for producing specific proteins?
What percentage of DNA is non-coding and often involved in harmless mutations?
What percentage of DNA is non-coding and often involved in harmless mutations?
Which type of mutation is considered beneficial as it enhances the organism's survival chances?
Which type of mutation is considered beneficial as it enhances the organism's survival chances?
In what process do gene mutations occur if a base pair is added, omitted, or doubled up?
In what process do gene mutations occur if a base pair is added, omitted, or doubled up?
Which term describes the genetic variation that occurs due to advantageous gene mutations being passed on and contributing to natural selection?
Which term describes the genetic variation that occurs due to advantageous gene mutations being passed on and contributing to natural selection?
What type of mutation involves changes to non-coding DNA and does not affect the cell's structure or functioning?
What type of mutation involves changes to non-coding DNA and does not affect the cell's structure or functioning?
Which mutation type leads to genetic disorders like haemophilia and sickle cell anaemia?
Which mutation type leads to genetic disorders like haemophilia and sickle cell anaemia?
What are examples of harmless mutations mentioned in the text?
What are examples of harmless mutations mentioned in the text?
How do useful mutations contribute to natural selection?
How do useful mutations contribute to natural selection?
When do gene mutations occur, resulting in alterations to the base sequence in DNA?
When do gene mutations occur, resulting in alterations to the base sequence in DNA?
Which of the following is a sex-linked gene mutation mentioned in the text?
Which of the following is a sex-linked gene mutation mentioned in the text?
What percentage of DNA constitutes non-coding DNA that often undergoes harmless mutations?
What percentage of DNA constitutes non-coding DNA that often undergoes harmless mutations?
What type of gene mutation causes Sickle Cell Anaemia?
What type of gene mutation causes Sickle Cell Anaemia?
Which condition is caused by a gene mutation affecting the normal development of melanin?
Which condition is caused by a gene mutation affecting the normal development of melanin?
During which phase of cell division can chromosome aberrations like Down syndrome occur?
During which phase of cell division can chromosome aberrations like Down syndrome occur?
What is the genetic consequence of non-disjunction during meiosis?
What is the genetic consequence of non-disjunction during meiosis?
Which term best describes the effect of faulty haemoglobin molecules in Sickle Cell Anaemia on red blood cells?
Which term best describes the effect of faulty haemoglobin molecules in Sickle Cell Anaemia on red blood cells?
How does a zygote develop Down syndrome according to the text?
How does a zygote develop Down syndrome according to the text?
Which characteristic is most commonly affected by Albinism?
Which characteristic is most commonly affected by Albinism?
What is the main difference between harmless mutations and harmful mutations?
What is the main difference between harmless mutations and harmful mutations?
How do useful mutations contribute to advantageous genetic variation?
How do useful mutations contribute to advantageous genetic variation?
Which genetic condition is mentioned in the text as an example of a harmful mutation?
Which genetic condition is mentioned in the text as an example of a harmful mutation?
What effect do harmful mutations have on an organism?
What effect do harmful mutations have on an organism?
Which specific type of DNA is often involved in harmless mutations?
Which specific type of DNA is often involved in harmless mutations?
What role do useful mutations play in natural selection?
What role do useful mutations play in natural selection?
Which genetic condition is affected by sex-linked gene mutations?
Which genetic condition is affected by sex-linked gene mutations?
What is the consequence of anaphase I not separating chromosomes properly during cell division?
What is the consequence of anaphase I not separating chromosomes properly during cell division?
How does a mutation in the gene responsible for producing melanin manifest in individuals?
How does a mutation in the gene responsible for producing melanin manifest in individuals?
In Down syndrome, what is the genetic basis of the condition?
In Down syndrome, what is the genetic basis of the condition?
What effect does the production of faulty haemoglobin molecules have on red blood cells in Sickle Cell Anaemia?
What effect does the production of faulty haemoglobin molecules have on red blood cells in Sickle Cell Anaemia?
What type of mutation is characterized by an alteration in the DNA sequence that does not affect the structure or function of the cell?
What type of mutation is characterized by an alteration in the DNA sequence that does not affect the structure or function of the cell?
How do chromosome aberrations like Down syndrome affect zygotes?
How do chromosome aberrations like Down syndrome affect zygotes?
What is the outcome of a recessive gene mutation that inhibits melanin development in individuals?
What is the outcome of a recessive gene mutation that inhibits melanin development in individuals?
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