Crossing over involves the exchange of corresponding segments between
- A. two sister chromatids of the same chromosome
- B. any two chromatids chosen at random
- C. the two strands of one DNA molecule
- D. non sister chromatids of homologous chromosomes
Explanation
Exchange between non sister chromatids of homologues shuffles maternal and paternal alleles, creating recombinant gametes. Exchange between sister chromatids would swap identical material and produce nothing new.
Related questions
The separation of the two alleles of a gene so that each gamete receives only one of them is Mendel's law of
The F2 phenotypic ratio of a dihybrid cross between two heterozygotes is
To find out whether a tall pea plant is homozygous or heterozygous, it should be crossed with
The genotypic ratio of the F2 generation of a monohybrid cross is
A red flowered four o'clock plant crossed with a white flowered one gives pink flowered offspring. This is an example of