Which of the following statements about genetic recombination is incorrect_______
A. The free combination of non-allelic genes on non-homologous chromosomes in the late stage of the first meiotic division is a genetic recombination
B. During meiotic tetrads, local exchange of sister chromatids can lead to genetic recombination
C. The insect-resistant cotton cultivated by Chinese scientists is based on the principle of genetic recombination
D. Breeders breed seedless watermelons, but the principle used is not genetic recombination
Answer:B
Which of the following statements about genetic recombination is incorrect_______
A. The free combination of non-allelic genes on non-homologous chromosomes in the late stage of the first meiotic division is a genetic recombination B. During meiotic tetrads, local exchange of sister chromatids can lead to genetic recombination C. The insect-resistant cotton cultivated by Chinese scientists is based on the principle of genetic recombination D. Breeders breed seedless watermelons, but the principle used is not genetic recombination