Crossing over involves the exchange of corresponding segments between
Correct answer: D. non sister chromatids of homologous chromosomes
- 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.
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About Mendel's Laws of Inheritance
Mendelian inheritance explains how alleles separate into gametes and assort during reproduction, producing predictable genotype and phenotype ratios. Questions cover dominance, recessiveness, homozygous and heterozygous conditions, the laws of segregation and independent assortment, monohybrid and dihybrid crosses, test crosses and the limits caused by linked genes.
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