Short Answer TypeWrite the types of sex-determination mechanisms the following crosses show. Give an example of each type
(i) Female XX with Male XO
Write the types of sex-determination mechanisms the following crosses show. Give an example of each type
(ii) Female ZW with Male ZZ
Name the scientist who suggested that the genetic code should be made of a combination of three nucleotides.
Explain with the help of a suitable example the naming of a restriction endonuclease.
The naming of a restriction endonuclease is done in the following way:
i) Ist letter represents the genus of the organism from which the enzyme is derived.
ii) IInd and IIIrd letters represent the species of the organism.
iii) IVth letter represents the name of the strain.
iv) Roman number represents order in which the enzyme was isolated.
For example, In EcoRI is Derived from genus Escherichia and species coli of, strain R.
It is the 1st to be discovered.
State how Agrobacterium tumifaciens has been made a useful cloning vector to transfer DNA to plant cells.
Apart from being a part of the food chain, predators play other important roles. Mention any two such roles supported by examples.
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