The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
all heterozygous tall
two tall and two dwarf
one homozygous tall, two heterozygous tall and one homozygous dwarf
all homozygous dwarf.
- The genetic constitution of an organism is known as
- A colour-blind man marries the daughter of a colour-blind person. In their progeny
- Among the following which is a test cross?
- Which disease results from the genetic inability to synthesize a single enzyme ?
- Reverse transcription was discovered by
- In the Operon concept, the regulator gene regulates chemical reactions in the cell by
- DNA duplication occurs in
- The nuclear membrane completely disappears during
- The term 'meiosis' was coined bv
- A giant chromosome having many chromo-nemata lying side by side all along their length is called
- Which one of the following chemical characteristics is not common to all living beings ?
- A child is bom with an extra chromosome in each of its cells. This is usually the result of
- Colour blindness is caused due to
- An offspring of two homozygous parents different from one another by alleles at only one gene locus…
- Crossing over in meiosis occurs in
- The science dealing with study of inheritance and variation is
- Linked genes may be separated by the process of
- In a monohybrid cross the Fi ratio of a backcross is
- Linkage is
- The condition in which only one allele of a pair is present is known as
- If an individual does not breed true for its characters, it is called
- Base substitutions from base analogues I are called
- A chemical mutagen is
- Lethal genes are those which
- The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
- A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
- Exhibition of superiority by a hybrid over both of its parents is called
- Mutations which are not dominant are not lost by a gene pooL This is known as
- The first person to induce mutations was
- A person meets with an accident and great loss of blood has occurred. There is no time to analyse…