Among the following which is a test cross?
TtxTt
TTxTT
TTxTt
Ttxtt
- When two genes are situated very close to each other in a chromosome
- The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
- A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
- The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
- A functional unit of a gene which specifies synthesis of one poly-peptide is known as
- Which one of the following chemical characteristics is not common to all living beings ?
- How many meiosis will be required to produce 102 pollen-grains ?
- 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
- A chemical mutagen is
- Exhibition of superiority by a hybrid over both of its parents is called
- Albinism in com plants is best described as
- Colour blindness is caused due to
- Chromosomes exhibit minimum coiling during
- The scientists who rediscovered the Mendel's laws are
- Klinefelter's syndrome is developed when the chromosome in male is
- The term 'meiosis' was coined bv
- Linkage is
- An offspring of two homozygous parents different from one another by alleles at only one gene locus…
- The chromosomal theroy of heredity implies that
- Which disease results from the genetic inability to synthesize a single enzyme ?
- The condition in which only one allele of a pair is present is known as
- The science dealing with study of inheritance and variation is
- Diakinesis is characterised by
- In humans, an example of sex-linked trait is
- Dyad is
- The number of characters investigated by Mendel was
- A giant chromosome having many chromo-nemata lying side by side all along their length is called
- The best method to determine whether an individual is homozygous or heterozygous is
- Mutations which are not dominant are not lost by a gene pooL This is known as