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What are the situations in which the environment can change the genotype of an individual? What is the condition for this type of change to be transmitted to the offspring?
The environment can only alter genotypes when its action causes alterations in the genetic material (mutations) of the individual, i.e., deletion, addition or substitution of entire chromosomes or of nucleotides that form the DNA molecules.
Mutations are only transmitted to the offspring when affecting the germ cells that produce gametes or the gametes themselves.
Signify the term in details - Pseudocoelom. A body cavity that isn't completely lined by mesoderm. Mesoderm is associated with only the ectodermal surface but not endoderm. The
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Bovine spongiform encephalopathy The bovine transmissible spongiform encephalopathy (BSE), known as 'mad cow disease'-first noticed in Great Britain in 1986, is similar to scra
Amino Acid - compound with an amino group and a carboxyl group attached to a central carbon Proteins make up 50% of dry mass of cells in our bodies E.g. of proteins are
PARATHYROID DISORDERS - (i) Hypoparathyroidism (deficiency of PTH) . It causes the lowering of blood calcium level. This increases the excitability of nerves and muscles, caus
Q. What are the major substances transferred from the mother to the fetus through the placenta? And from the fetus to the mother? From the mother to the fetus the major transfe
Vitamin B 6 (Pyridoxine hydrochloride) Pyridoxine hydrochloride is a white, crystalline powder, practically odourless. The dry substance is sufficiently stable in air. With pr
Q. How be able to the excretory system of annelids be described? In each segment (metamere) of the being a pair of complete excretory structures known as metanephridium exists.
Smooth muscles These muscles are beyond our control. That means these muscles are controlled by autonomic nervous system. They are non-voluntary muscles. They are found in thin
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