Down's syndrome is an example of
monosomy
trisomy
triploidy
polyploidy
- How many meiosis will be required to produce 102 pollen-grains ?
- The scientists who rediscovered the Mendel's laws are
- Klinefelter's syndrome is developed when the chromosome in male is
- Diakinesis is characterised by
- The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
- Exhibition of superiority by a hybrid over both of its parents is called
- A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
- In humans, an example of sex-linked trait is
- Which one of the following chemical characteristics is not common to all living beings ?
- The genetic constitution of an organism is known as
- A codon is a sequence of 3 nucleolides on
- If an individual does not breed true for its characters, it is called
- Among the following which is a test cross?
- In the Operon concept, the regulator gene regulates chemical reactions in the cell by
- A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
- The first person to induce mutations was
- The condition in which only one allele of a pair is present is known as
- Base substitutions from base analogues I are called
- In a monohybrid cross the Fi ratio of a backcross is
- Crossing over in meiosis occurs in
- A functional unit of a gene which specifies synthesis of one poly-peptide is known as
- The science dealing with study of inheritance and variation is
- Transfer of a gene or genes through a virus is called
- Down's syndrome is an example of
- The segment of DNA which participates in crossing over is known as
- A child is bom with an extra chromosome in each of its cells. This is usually the result of
- Reverse transcription was discovered by
- The chromosomal theroy of heredity implies that
- DNA duplication occurs in
- A chemical mutagen is