In a monohybrid cross the Fi ratio of a backcross is
1:1
3:1
1:2:1
9:3:3:3
- A colour-blind man marries the daughter of a colour-blind person. In their progeny
- The condition in which only one allele of a pair is present is known as
- Reverse transcription was discovered by
- The segment of DNA which participates in crossing over is known as
- The genetic constitution of an organism is known as
- In the Operon concept, the regulator gene regulates chemical reactions in the cell by
- Down's syndrome is an example of
- Crossing over in meiosis occurs in
- Colour blindness is caused due to
- Which disease results from the genetic inability to synthesize a single enzyme ?
- How many meiosis will be required to produce 102 pollen-grains ?
- Albinism in com plants is best described as
- The first person to induce mutations was
- DNA duplication occurs in
- Among the following which is a test cross?
- Chromosomes exhibit minimum coiling during
- Linked genes may be separated by the process of
- Diakinesis is characterised by
- The science dealing with study of inheritance and variation is
- A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
- In humans, an example of sex-linked trait is
- If an individual does not breed true for its characters, it is called
- When is the sex of an offspring decided
- Klinefelter's syndrome is developed when the chromosome in male is
- Exhibition of superiority by a hybrid over both of its parents is called
- When two genes are situated very close to each other in a chromosome
- The best method to determine whether an individual is homozygous or heterozygous is
- The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
- The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
- Mutations which are not dominant are not lost by a gene pooL This is known as