In the Operon concept, the regulator gene regulates chemical reactions in the cell by
inhibiting transcription of m-RNA
inactivating enzymes in the reaction
inhibiting the substrate in the reaction
inhibiting the migration of m-RNA into cytoplasm
- In humans, an example of sex-linked trait is
- A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
- The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
- An offspring of two homozygous parents different from one another by alleles at only one gene locus…
- Reverse transcription was discovered by
- The segment of DNA which participates in crossing over is known as
- The best method to determine whether an individual is homozygous or heterozygous is
- Exhibition of superiority by a hybrid over both of its parents is called
- The nuclear membrane completely disappears during
- Diakinesis is characterised by
- A colour-blind man marries the daughter of a colour-blind person. In their progeny
- The science dealing with study of inheritance and variation is
- Chromosomes exhibit minimum coiling during
- Linkage is
- A child is bom with an extra chromosome in each of its cells. This is usually the result of
- The scientists who rediscovered the Mendel's laws are
- Colour blindness is caused due to
- Crossing over in meiosis occurs in
- In the Operon concept, the regulator gene regulates chemical reactions in the cell by
- Lethal genes are those which
- When two genes are situated very close to each other in a chromosome
- Among the following which is a test cross?
- In a monohybrid cross the Fi ratio of a backcross is
- The condition in which only one allele of a pair is present is known as
- Dyad is
- If an individual does not breed true for its characters, it is called
- DNA duplication occurs in
- The term 'meiosis' was coined bv
- How many meiosis will be required to produce 102 pollen-grains ?
- A codon is a sequence of 3 nucleolides on