CBSE Class 12 Biology VBQs Genetics And Evolution Set A

CBSE Class 12 Biology VBQs Genetics and Evolution, Based on CBSE and NCERT guidelines. Value based questions are now being given in exams to promote morals and values in students, Students should read and understand the following VBQs to get better understanding and score good marks in exams

UNIT VII - GENETICS AND EVOLUTION

• Swati is dark skinned and children of her class tease her. Renu tries to help and explains her classmates that skin color is an inherited character, so they should stop teasing Swati. Name the type of inheritance involved in skin coloration of humans.

• Alok was rejected for driving license as it was found that he could not distinguish between red and green color. What would be the impact of his color blindness on his driving on road?

• A couple fights frequently for the paternity of their child. The husband thinks that he is not the father of this child. Name the technique you will suggest to solve the problem of paternity.

• You must have read in the newspaper  that some children suffering from Thalesemia became HIV positive due to negligence of a hospital. What negligence has been made on part of hospital authorities in your opinion?

• Rohit meets an accident. Iqbal his schoolmate takes him to hospital where Rohit (AB blood group) needs blood transfusion. Iqbal also has AB blood group and is willing to donate his blood but Rohit’s mother object by saying “Iqbal belongs to different community so has different type of blood.” In your opinion Rohit’s mother is wrong or right? Give your opinion by explaining the allelic composition of blood group AB.

• Mohit had severe pain in his last molar tooth. Doctor advised the tooth to be removed. Mohit’s sister objected saying that this was ‘wisdom tooth’ and is responsible for his IQ. Mohit followed doctor’s advice and got his tooth extracted. Do you think Mohit will fail in his final examinations? Justify your answer by naming the type of structures the ‘wisdom tooth” is?

• Kavita’s parents suffer from high blood pressure and are obess. Kavita is also worried about her health. Do you think kavita can inherit these characteristic from parent. Suggest two measures kavita can adopt to avoid high blood pressure and obesity.

• Roshan a 5yr child in neighborhood is suffering from Down’s syndrome. Other children in your locality do not interact with him.

• Is it right not to interact with Roshan

• What is the cause of Down’s  Syndrome

• Write any two Symptoms.

• The day next to heavy rains, many insects/moths can be seen near light sources. Some people believe that these insects develop from mud. Do you agree with this belief? What is theory of origin of life known as? How will you explain the development of these insects from mud?

• According to the human Genome Project, almost 99.9% nucleotide bases are exactly the same in all people.

• Do you think the discrimination of people on the basis of color, creed, caste, religion is correct? Why?

• What percentage of the human genome codes for proteins?

• Which chromosome has most genes on it?

Unit-7 Genetics and Evolution

Answers & Values

• Quantitative /Polygenic inheritance

Values

• Sensitivity towards fellow beings.

• Compassion.

• Understanding

• He will not be able to distinguish between red and green signal on road. This may lead to an accident

Values

• Responsibility

• Awareness

• DNA Fingerprinting

Values

• Compassion.

• Empathy.

• During transfusion of blood to thalesemic patient.

• Blood might have been contaminated.

• Sterile needles/ injection were not used

Values

• Critical thinking

• Awareness about health

• Empathy.

• Wrong.

Blood Group AB has two alleles A and B in the people of all communities

Values

• Sensitivity towards fellow beings.

• Compassion for others

• Responsibility.

• No. “Wisdom tooth” Has nothing to do with IQ or performance of any person. It is vestigial organ which can be remove

Values

• Awareness.

1) No, these are life style related diseases

2) Any two measures- changing in food habits, exercises, leading active life, meditation.

Values

• Awareness about health.

• Understanding.

1) No.

2) Genetic disorder due to trisomy.

3) Any two symptoms.

Values

• Empathy.

• Concern.

• No Spontaneous generation theory

Values

• Awareness about environment.

• Understanding.

More Questions

Q.1 Swati is dark skinned and children of her class tease her. Renu tries to help and explains her classmates that skin color is an inherited character, so they should stop teasing Swati. Name the type of inheritance involved in skin coloration of humans.

• Quantitative /Polygenic inheritance

Values

• Sensitivity towards fellow beings.

• Compassion. 

• Understanding

Q.2 Alok was rejected for driving license as it was found that he could not distinguish between red and green color. What would be the impact of his color blindness on his driving on road?

• He will not be able to distinguish between red and green signal on road. This may lead to an accident 

Values

• Responsibility 

• Awareness

Q.3 A couple fights frequently for the paternity of their child. The husband thinks that he is not the father of this child. Name the technique you will suggest to solve the problem of paternity.

• DNA Fingerprinting

Values

• Compassion. 

• Empathy.

Q.4 You must have read in the news paper that some children suffering from Thalesemia became HIV positive due to negligence of a hospital. What negligence has been made on part of hospital authorities in your opinion?

• During transfusion of blood to thalesemic patient.

• Blood might have been contaminated.

• Sterile needles/ injection were not used

Values

• Critical thinking

• Awareness about health

• Empathy. 

• Wrong.

Q.5 Rohit meets an accident. Iqbal his schoolmate takes him to hospital where Rohit (AB blood group) needs blood transfusion. Iqbal also has AB blood group and is willing to donate his blood but Rohit’s mother object by saying “Iqbal belongs to different community so has different type of blood.” In your opinion Rohit’s mother is wrong or right? Give your opinion by explaining the allelic composition of blood group AB.

Blood Group AB has two alleles A and B in the people of all communities

Values

• Sensitivity towards fellow beings.

• Compassion for others 

• Responsibility

Q.6 Mohit had severe pain in his last molar tooth. Doctor advised the tooth to be removed. Mohit’s sister objected saying that this was ‘wisdom tooth’ and is responsible for his IQ. Mohit followed doctor’s advice and got his tooth extracted. Do you think Mohit will fail in his final examinations? Justify your answer by naming the type of structures the ‘wisdom tooth” is?

• No. “Wisdom tooth” Has nothing to do with IQ or performance of any person. It is vestigial organ which can be remove

Values 

• Awareness.

Q.7 Kavita’s parents suffer from high blood pressure and are obess. Kavita is also worried about her health. Do you think kavita can inherit these characteristic from parent. Suggest two measures kavita can adopt to avoid high blood pressure and obesity.

• 1) No, these are life style related diseases

  2) Any two measures- changing in food habits, exercises, leading active life, meditation.

Values

• Awareness about health. 

• Understanding.

• Roshan a 5yr child in neighborhood is suffering from Down’s syndrome. Other children in your locality do not interact with him.

• Is it right not to interact with Roshan

• What is the cause of Down’s Syndrome

• Write any two Symptoms.

• The day next to heavy rains, many insects/moths can be seen near light sources. Some people believe that these insects develop from mud. Do you agree with this belief? What is theory of origin of life known as? How will you explain the development of these insects from mud?

• According to the human Genome Project, almost 99.9% nucleotide bases are exactly the same in all people.

• Do you think the discrimination of people on the basis of color, creed, caste, religion is correct? Why?

• What percentage of the human genome codes for proteins? 

• Which chromosome has most genes on it?