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Arjun dayal

Asked: October 12, 2021In: Class 12 Biology

In the metropolitan cities of India, many children are suffering from allergy/asthma. What are the main causes of this problem. Give some symptoms of allergic reactions.

12th Science Biology Extra Questions Class 12th Biology NCERT Based Questions 12th Biology Science Session 2022-23 Class 12 Science Biology Terminal Exams Solutions

Amit nagpal

Asked: October 12, 2021In: Class 12 Biology

“Migration may enhance or blurr the effects of selection”. Comment.

Class 12th Science Session 2022-2023 Class 12 Science Important Syllabus Questions Answers Class 12th Biology NCERT Based Questions Class 12 Science Biology Terminal Exams Solutions

Anurag

Asked: October 12, 2021In: Class 12 Biology

While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.

Class XII Science Biology Extra Questions Class 12th Biology NCERT Based Questions 12th Biology Science Session 2022-23 12th Biology Terminal Exam Based Extra Questions

Bhupender

Asked: October 12, 2021In: Class 12 Biology

What is the basic principle of vaccination? How do vaccines prevent microbial infections? Name the organism from which hepatitis B vaccine is produced.

12th Biology NCERT Syllabus Questions 12th Biology Terminal Exam Based Extra Questions Class 12 Biology Extra Questions Answers 12th Biology Science Session 2022-23

Nirmala

Asked: October 11, 2021In: Class 12 Biology

Do you think that the alternate splicing of exons may enable a structural gene to code for several isoproteins from one and the same gene? If yes, how? If not, why so?

Class 12 Science Biology Important Questions 12th Science Biology Extra Questions Class 12th Science Session 2022-2023 12th Science Biology Questions Answers

In the metropolitan cities of India, many children are suffering from allergy/asthma. What are the main causes of this problem. Give some symptoms of allergic reactions.

“Migration may enhance or blurr the effects of selection”. Comment.

While creation and presence of variation is directionless, natural selection is directional as it is in the context of adaptation. Comment.

What is the basic principle of vaccination? How do vaccines prevent microbial infections? Name the organism from which hepatitis B vaccine is produced.

Do you think that the alternate splicing of exons may enable a structural gene to code for several isoproteins from one and the same gene? If yes, how? If not, why so?

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