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Asked: October 11, 2021In: Class 12 Biology

What is Down’s syndrome? Give its symptoms and cause. Why is it that the chances of having a child with Down’s syndrome increases if the age of the mother exceeds forty years?

Class 12 Science Important Syllabus Questions Answers Class XII Science Biology Extra Questions Class 12th Biology Sample paper Questions Class 12 Biology Extra Questions Answers

Chanda Kamari

Asked: October 11, 2021In: Class 12 Biology

What are the characteristic features of a true-breeding line?

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

Sadhavi Chopra

Asked: October 11, 2021In: Class 12 Biology

All reproductive tract infections (RTIs) are STDs, but all STDs are not RTIs- Justify with example.

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

Rohini devi

Asked: October 11, 2021In: Class 12 Biology

Corpus luteum in pregnancy has a long life. However, if fertilisation does not take place it remains active only for 10-12 days . Why?

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

Lalit jain

Asked: October 11, 2021In: Class 12 Biology

In GIFT, gametes are transferred to the fallopian tube. Can gametes be transferred to the uterus to achieve the same result? Explain.

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

What is Down’s syndrome? Give its symptoms and cause. Why is it that the chances of having a child with Down’s syndrome increases if the age of the mother exceeds forty years?

What are the characteristic features of a true-breeding line?

All reproductive tract infections (RTIs) are STDs, but all STDs are not RTIs- Justify with example.

Corpus luteum in pregnancy has a long life. However, if fertilisation does not take place it remains active only for 10-12 days . Why?

In GIFT, gametes are transferred to the fallopian tube. Can gametes be transferred to the uterus to achieve the same result? Explain.

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