Among the following which is a test cross?
TtxTt
TTxTT
TTxTt
Ttxtt
- Crossing over in meiosis occurs in
- Lethal genes are those which
- A giant chromosome having many chromo-nemata lying side by side all along their length is called
- When is the sex of an offspring decided
- Klinefelter's syndrome is developed when the chromosome in male is
- Among the following which is a test cross?
- A child is bom with an extra chromosome in each of its cells. This is usually the result of
- The nuclear membrane completely disappears during
- An offspring of two homozygous parents different from one another by alleles at only one gene locus…
- Exhibition of superiority by a hybrid over both of its parents is called
- The first person to induce mutations was
- Down's syndrome is an example of
- Base substitutions from base analogues I are called
- The number of characters investigated by Mendel was
- Transfer of a gene or genes through a virus is called
- The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
- A chemical mutagen is
- Linked genes may be separated by the process of
- The science dealing with study of inheritance and variation is
- A person meets with an accident and great loss of blood has occurred. There is no time to analyse…
- Dyad is
- 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
- A colour-blind man marries the daughter of a colour-blind person. In their progeny
- The chromosomal theroy of heredity implies that
- In the Operon concept, the regulator gene regulates chemical reactions in the cell by
- Linkage is
- Chromosomes exhibit minimum coiling during
- The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
- DNA duplication occurs in