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q what is barr body geneslocated inside nuclear envelope its a densely staining object which is an inactivated x chromosome in female mammalian cells
q how the dna nanoarchitecturing worksdna nano architectures constructs that can be self-assembled from branched dna molecules their components can
q applications of genetic engineeringapplications of genetic engineering in different fields arebull agriculture crops having larger yields drought
q what is genetic engineeringgenetic engineering it is also known as molecular cloning or gene cloning is artificial recombination of nucleic acid
q what is green fluorescent protein gfpgreen fluorescent protein is a protein which is found in a luminescent jellyfish aquorea victoria that lives
q what are the stages of mitosismitosis involves replication of dna and its separation into two new daughter cells whereas only four phases of
q how much dna is in a typical human cellif dna deoxyribonucleic acid molecules in a single human cell were stretched out and laid end to end they
q what is self-catalytic rnasribozymes -term ribozyme was initially suggested by thomas r cech nobel prize winning biochemist who discovered this
q how dna-rna hybridization occursboth dna and rna are able to form hybrids in solution with other rna or dna molecules which have complementary base
q what are the features of hnrnaheterogeneous nuclear rna hnrna - primary precursor mrna transcript made in eukaryotic nucleus are called hnrna an
q how sex occurs in bacteriaoccurrence of sex in bacteria was first described by edward tatum and joshua lederberg in 1946 nature volume 158 page 558
q do all molecules of dna have the same amounts of nitrogenous basesnumber and sequence of nitrogenous bases in dna molecule are key elements in
q is a gene the same as a dna moleculegenes are units of heredity a gene is a section or segment of a dna molecule this section of dna provides a
q what is an illustration of gene controlan elegant instance of gene control in bacteria is operon system a cluster of genes which is responsible for
q what are the main causes of mutationsome mutations take place randomly and spontaneously during process of mitosis or meiosis others are caused by
q distinguish among the terms stimulus sensation and perceptiona stimulus is an energy source chemical light wave pressure etc which activates a
q why is it dangerous to talk while eatingif a person talks when eating food may be inhaled into the lungs generally after food is swallowed it
q why is there a popping sound when you crack your knuckles and is it dangerous to crack themsome reasons have been given for the characteristic
q which structures of the body have more bones for their size than any other part of the bodyhand and wrist have more bones in them for their size
q how do bones growbones form and develop through a process known as ossification there are two types of ossification endochondral ossification and
q what is rigor mortisdead bodies are at first limp many hours after death skeletal muscles undergo a partial contraction that fixes the joints this
q are there differences between the male and female skeletonsmany general differences exist between female and male skeletons male skeleton is
q which types of tissue have the greatest capacity to regenerateepithelial and connective tissues have the greatest capacity to regenerate in
q is all the cartilage in the body the samethere are 3 types of cartilage in the human body 1 hyaline cartilage 2 elastic cartilage and 3
q how is the skin involved in the regulation of body temperatureskin is one of various organ systems participating in maintaining a core temperature