Very important points of GK, SCIENCE( chemistry , biology & physics) for NDA ,CDS ,CAPF AC ,UPSC, SSC ,RAILWAYS DSSSB & UPCOMING EXAMS @ BRILLIANT ACADEMY OF LEARNING , Laxmi Nagar, Delhi
1 . How is sex determined in Human Beings ? Human male sex chromosomes are XY & Human female sex chromosomes are XX. When a male gamete that is sperm carrying X chromosome fertilize an ova , the zygote develop into female & when a sperm carrying Y chromosome fertilizes an egg , zygote develops into male. 2. What is Genetics ? Who coined the term Genetics ? Who is called Father of Genetics? Transfer of hereditary character from one generation to the next generation is called Genetics . The term Genetics was coined by W .Watson. The father of Genetics is G.J. Mendel. 3. What is cell? Study of cell is called ? Who coined term Cell ? Who propounded cell theory ? Which is the smallest and longest cell in humans ? Which is the smallest and biggest cell in organism ? Cell is structural and functional unit of life . Study of cell is called Cytology . The term cell was coined by Robert Hook. Cell theory was propounded by Schilden and Schwan . The smallest cell in humans is sperm