A child is bom with an extra chromosome in each of its cells. This is usually the result of
nondisjunction
crossing over
segregation
hybridization
- In a monohybrid cross the Fi ratio of a backcross is
- A pure tall pea plant was reared in a soil poor in nutrition and reached the size of a pure dwarf pea…
- The science dealing with study of inheritance and variation is
- An offspring of two homozygous parents different from one another by alleles at only one gene locus…
- Linkage is
- The scientists who rediscovered the Mendel's laws are
- A chemical mutagen is
- A giant chromosome having many chromo-nemata lying side by side all along their length is called
- The segment of DNA which participates in crossing over is known as
- Klinefelter's syndrome is developed when the chromosome in male is
- The chromosomal theroy of heredity implies that
- Exhibition of superiority by a hybrid over both of its parents is called
- Base substitutions from base analogues I are called
- The condition in which only one allele of a pair is present is known as
- The best method to determine whether an individual is homozygous or heterozygous is
- Reverse transcription was discovered by
- The possibilities of hereditary and evolutionary changes are greatest in species that reproduce by
- Some people experience PTC paper on tongue as bitter, others as tasteless. This character is hereditary…
- A codon is a sequence of 3 nucleolides on
- The crossing of a homozygous tall plant with a dwarf would yield plants in the ratio of
- How many meiosis will be required to produce 102 pollen-grains ?
- When is the sex of an offspring decided
- A functional unit of a gene which specifies synthesis of one poly-peptide is known as
- The number of characters investigated by Mendel was
- Chromosomes exhibit minimum coiling during
- Linked genes may be separated by the process of
- A child is bom with an extra chromosome in each of its cells. This is usually the result of
- Which one of the following chemical characteristics is not common to all living beings ?
- The nuclear membrane completely disappears during
- In humans, an example of sex-linked trait is