A child is bom with an extra chromosome in each of its cells. This is usually the result of
nondisjunction
crossing over
segregation
hybridization
- The number of characters investigated by Mendel was
- Albinism in com plants is best described as
- The scientists who rediscovered the Mendel's laws are
- How many meiosis will be required to produce 102 pollen-grains ?
- In a monohybrid cross the Fi ratio of a backcross is
- A codon is a sequence of 3 nucleolides on
- Which disease results from the genetic inability to synthesize a single enzyme ?
- Mutations which are not dominant are not lost by a gene pooL This is known as
- Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
- The chromosomal theroy of heredity implies that
- Linked genes may be separated by the process of
- The science dealing with study of inheritance and variation is
- Linkage is
- Diakinesis is characterised by
- DNA duplication occurs in
- Crossing over in meiosis occurs in
- Which one of the following chemical characteristics is not common to all living beings ?
- The first person to induce mutations was
- Klinefelter's syndrome is developed when the chromosome in male is
- The nuclear membrane completely disappears during
- Dyad is
- Transfer of a gene or genes through a virus is called
- A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
- The segment of DNA which participates in crossing over is known as
- A functional unit of a gene which specifies synthesis of one poly-peptide is known as
- When is the sex of an offspring decided
- In humans, an example of sex-linked trait is
- Chromosomes exhibit minimum coiling during
- A giant chromosome having many chromo-nemata lying side by side all along their length is called
- Down's syndrome is an example of