Explain how in vitro mutagenesis and rna interference to discover the functions of some genes

In vitro mutagenesis:

Another way of applying cloned DNA is in vitro mutagenesis. Here, a mutation is caused in a fraction of cloned DNA which is then transferred to the cell or organism, in order to determine the results of the mutation.

Disable cloned gene, when it's inserted back in the organism, it can be used to study phenotype.

rna interference:

RNA interference (RNAi) uses RNA molecules to prevent gene expression or translation causing in

inactivation of the targeted mRNA molecules.

It gives Double-stranded RNA homologous to remote gene which will cause a disintegration of mRNAs out of the gene.

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.