Refraction of light at a spherical surface
Refraction of light at a convex surface :- 1. For real image :- The figure shows the geometry of formation […]
Exceptions to Mendel’s laws : Incomplete dominance, Co-dominance and Linkage
1. Incomplete dominance :- It is a post Mendelian discovery. In the case heterozygous condition of gene results in intermediate
Mendel’s laws of inheritance and Chromosomal theory of inheritance
Mendel’s laws of inheritance :- Mendel’s present his paper on principles of heredity at the annual conventy on natural history
Monohybrid cross and the Punnet square
Monohybrid cross :- Monohybrid is the cross involves one character and single gene pair.It leads to monohybrid offspring in F₁
Dihybrid cross
It is a cross which involves two characters and two gene pair. it leads to dihybrid F₁ offspring. Mendel worked
Definitions of some technical terms used in Mendel’s experiments ( Allele , Pleiotrophic gene , Genotype , Phenotype and more)
Allele or Allelomorph :- Genes which code for a pair of contrasting traits are known as alleles, i.e. They are
Genetics, Heredity, Gene and Reasons for Mendel’s success
Genetics :- Genetics is the branch of biology concerned with the study of genes, genetic variation and heredity in organisms.
न्यूक्लिक अम्ल तथा उसका प्रकार, न्युक्लियोसाइड तथा न्युक्लियोसाइड, डीएनए (DNA) की संरचना तथा उसका प्रकार का वर्णन।
न्यूक्लिक अम्ल (Nucleic acid) :- कोशिका के न्यूक्लियस में क्रोमोसोम के अंदर उपस्थित आनुवंशिक पदार्थ को न्यूक्लिक अम्ल कहते हैं।
RNA : Structure , Types , Differences between RNA and RNA
RNA and its structure :- RNA molecules are single stranded nucleic acids composed of nucleotides. Fig. 1. Structure of (
Atmospheric refraction : Twinkling of stars, Apparent time of Sunrise and sunset
Twinkling of stars :- it is is a phenomenon of atmospheric refraction. Stars do not really twinkle they just appear
Total internal reflection and its applications : Mirage, Diamond, Prism and Optical fibre
Total internal reflection :- when light travels from and optically denser medium to rarer medium at the interface, it is
DNA फिंगरप्रिंटिंग क्या है। DNA फिंगरप्रिंटिंग के क्या उपयोग हैं।
DNA फिंगरप्रिंटिंग :- मनुष्य के डीएनए में पाए जाने वाले क्षार अनुक्रम लगभग 99.9 % एक समान होते हैं, किंतु