What major contribution did Barbara McClintock and Harriet Creighton make to the study of recombination?
A) Genetic recombination of alleles is associated with physical exchange between chromosomes.
B) Genes are located on chromosomes and the map distance between them could often be measured by the number of nucleotides in the DNA.
C) Determining map distances in humans could be done by using pedigrees and calculating lod scores.
D) Association studies allow genes that have no obvious phenotype to be accurately mapped.
E) Crossing over does not occur in male Drosophila, so there is no genetic recombination.

Question

Quizplus · Accepted Answer

Barbara McClintock and Harriet Creighton demonstrated that genetic recombination of alleles is associated with physical exchange between chromosomes, providing evidence for the physical basis of genetic recombination.

What Major Contribution Did Barbara McClintock and Harriet Creighton Make