In a monohybrid cross the Fi ratio of a backcross is
1:1
3:1
1:2:1
9:3:3:3
- Reverse transcription was discovered by
- DNA duplication occurs in
- The best method to determine whether an individual is homozygous or heterozygous is
- The scientists who rediscovered the Mendel's laws are
- If an individual does not breed true for its characters, it is called
- Base substitutions from base analogues I are called
- The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
- The condition in which only one allele of a pair is present is known as
- Transfer of a gene or genes through a virus is called
- The term 'meiosis' was coined bv
- Chromosomes exhibit minimum coiling during
- Linked genes may be separated by the process of
- A codon is a sequence of 3 nucleolides on
- Diakinesis is characterised by
- Lethal genes are those which
- Albinism in com plants is best described as
- The science dealing with study of inheritance and variation is
- In the Operon concept, the regulator gene regulates chemical reactions in the cell by
- When two genes are situated very close to each other in a chromosome
- Which one of the following chemical characteristics is not common to all living beings ?
- When is the sex of an offspring decided
- A giant chromosome having many chromo-nemata lying side by side all along their length is called
- An offspring of two homozygous parents different from one another by alleles at only one gene locus…
- The nuclear membrane completely disappears during
- Among the following which is a test cross?
- Colour blindness is caused due to
- A child is bom with an extra chromosome in each of its cells. This is usually the result of
- The genetic constitution of an organism is known as
- A colour-blind man marries the daughter of a colour-blind person. In their progeny
- The first person to induce mutations was