Lethal genes are those which
cause the death of the organism in which they are present
cause the death of the homozygous infant being formed
cause the death of heterozygous infant being formed
all of the above
- A giant chromosome having many chromo-nemata lying side by side all along their length is called
- How many meiosis will be required to produce 102 pollen-grains ?
- When two genes are situated very close to each other in a chromosome
- The scientists who rediscovered the Mendel's laws are
- In humans, an example of sex-linked trait is
- DNA duplication occurs in
- A child is bom with an extra chromosome in each of its cells. This is usually the result of
- A chemical mutagen is
- A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
- A functional unit of a gene which specifies synthesis of one poly-peptide is known as
- The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
- Base substitutions from base analogues I are called
- The genetic constitution of an organism is known as
- The nuclear membrane completely disappears during
- The chromosomal theroy of heredity implies that
- Linkage is
- Klinefelter's syndrome is developed when the chromosome in male is
- A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
- Crossing over in meiosis occurs in
- If an individual does not breed true for its characters, it is called
- A codon is a sequence of 3 nucleolides on
- The condition in which only one allele of a pair is present is known as
- Albinism in com plants is best described as
- Colour blindness is caused due to
- Diakinesis is characterised by
- The term 'meiosis' was coined bv
- The number of characters investigated by Mendel was
- Linked genes may be separated by the process of
- In the Operon concept, the regulator gene regulates chemical reactions in the cell by
- In a monohybrid cross the Fi ratio of a backcross is