| dc.description |
Two four-point and one six-point crosses were made involving the factors black, lemon, cantaloup, long, honey, and veinless.Crossover percentages in these experiments range from 23.0 to 27.9 for black and lemon, from 11.3 to 12.5 for lemon and cantaloup, from 13.3 to 15.7 for cantaloup and long, from 9.4 to 9.8 for long and honey, and from 7.2 to 7.9 for honey and veinless.Evidence is presented to show that there is no interference by crossing-over in the black-lemon region with any region to the right of lemon. It is suggested that the spindle fiber attachment may be near lemon.It is indicated that double crossovers occurring in the cantaloup-long, honey-veinless regions have a lower ratio of coincidence than do the doubles occurring in the long-honey, honey-veinless regions, or that in this case interference is greater with a distant than with a nearer region. |
