Incomplete dominance : All traits in most organisms did not follow Mendel’s Laws of dominance. Eg.Flower colour in Snapdragon (Antirrhinum sp.): When true-breeding red-flowered Read More …
Author: Dr. Karuna Sharma
Ph.D. Environmental sciences, M.Sc. Zoology, Gold medalist, Goa University Topper. Conduct classes for NEET and NET Life Sciences
Explain how emasculation & bagging techniques help to achieve artificial hybridisation?
Emasculation – The pollen and anthers are cut off from the flower, so as to avoid self pollination Bagging – Covering the emasculated flower Read More …
The state health department wants to implement a project to create awareness about reproduction related aspects in villages. Explain the various activities that they would take up to promote their campaign.
India was among the 1st countries to initiate actions & plans to attain total reproductive health as social goal. These programmes are called as Read More …
A young lady during parturition fails to develop foetal ejection reflex. What treatment would the doctor give her immediately ?
Foetal ejection reflex are the mild uterine contractions which happens as a neuroendocrine mechanism when fully developed fetus sends signals which triggers the maternal Read More …
A couple visited a fertility clinic to treat their infertility. suggest & explain a method which would enable them to have a child using their own gametes.
Assisted reproductive technologies (ART) – Test Tube Baby / IVF- invitro fertilisation – the ova of the wife, and sperms from the husband are Read More …
What is Biopiracy ?
The use of Bio- resources by multinational companies and other organisations without proper authorisation from the countries and people concerned, without compensatory payment is Read More …
Mention any 1 significant feature of Restriction Endonuclease.
Restriction Endonuclease inspects the length of DNA, recognises a specific base pair sequence in DNA called a restriction site and cuts the DNA at Read More …
State Mendel’s law of independent assortment . Explain a Dihybrid cross & its result obtained by him?
Mendel’s Law of Independent Assortment states that when two pairs of traits are combined in a hybrid, segregation of one pair of characters is Read More …
During a war , the lost children were adopted by military personnel. Based on advanced blood test , they were later reunited with their parents. Name the technique used in this case & mention its scientific basis
DNA fingerprinting Based on the fact that DNA of one individual is 90% identical to DNA of another individual but there is 10% difference. Read More …
Why is DNA a better genetic material ?
DNA 1. Has two complementary strands. If separated by heating come back when appropriate conditions are provided. 2. Chemically less reactive Read More …