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Point mutations are often caused by substances called mutagens explain?
Point mutations are often caused by substances called mutagens. Base analogs, such as 5-bromouracil, a toxic drug used in cancer chemotherapy, are mutagens similar in structure to nucleotide bases. Other mutagens include coal tar dyes, which induce frame-shift mutations; ultraviolet light; atomic radiation; cigarette tars; some viruses, such as the genital herpes virus; and chronic irritants such as asbestos and silica. These mutagens are also referred to as carcinogens because they can lead to cancer, a condition in which cells fail to differentiate normally.
Egg - Synergids The three cells of the egg apparatus are arranged in triangular fashion with the egg sharing a common wall with the two synergids and the central cell. In the
What are some functions of the cartilages in the human body? Cartilages are responsible for the structural support of the nose and ears. The trachea and the bronchi are also or
What do biomass pyramids represent? The Biomass pyramids represent the sum of the masses of the individuals that participate in each trophic level of a food chain.
EPISTASIS Epistasis is the phenomenon of masking or suppressing the expression of a gene by another non allelic gene. The gene which suppresses the expression of a non allelic
#applications of biotechnology..
Factors affecting lipid oxidation Temperature In general, the rate of oxidation increases as the temperature is increased. Temperature also influences the relation betw
The bases in DNA have carbon-nitrogen ring structures; due to the nitrogen atoms they are known as nitrogenous bases. There are two parts of ring structure. Adenine and guanine are
Littoral and Benthic Zone Littoral Zone This is the shallow water zone, near the shore, where light penetrates to the bottom. Rooted plants can grow only in this region.
Define the Importance of Human Milk for Infant Growth and Development? Let us now look at the value of human milk in promoting infant growth and development. Success of lactat
Importance of Forests - Fuel Wood The forests are renewable resources which provide us a wide variety of commodities. For man, forests have been a source of recreation and the
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