A child is bom with an extra chromosome in each of its cells. This is usually the result of
nondisjunction
crossing over
segregation
hybridization
- When two genes are situated very close to each other in a chromosome
- Base substitutions from base analogues I are called
- DNA duplication occurs in
- Which one of the following chemical characteristics is not common to all living beings ?
- Crossing over in meiosis occurs in
- The condition in which only one allele of a pair is present is known as
- How many meiosis will be required to produce 102 pollen-grains ?
- The best method to determine whether an individual is homozygous or heterozygous is
- Colour blindness is caused due to
- Dyad is
- Linked genes may be separated by the process of
- The first person to induce mutations was
- A codon is a sequence of 3 nucleolides on
- A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
- Which disease results from the genetic inability to synthesize a single enzyme ?
- A functional unit of a gene which specifies synthesis of one poly-peptide is known as
- The chromosomal theroy of heredity implies that
- The number of characters investigated by Mendel was
- Among the following which is a test cross?
- Diakinesis is characterised by
- Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
- The segment of DNA which participates in crossing over is known as
- A chemical mutagen is
- Linkage is
- The scientists who rediscovered the Mendel's laws are
- Mutations which are not dominant are not lost by a gene pooL This is known as
- An offspring of two homozygous parents different from one another by alleles at only one gene locus…
- The genetic constitution of an organism is known as
- Lethal genes are those which
- Transfer of a gene or genes through a virus is called