Problem 1. Molecular Genetics
A sea urchin mutation results in an unusual positioning of themitotic spindle during the very first cleavage division:instead ofthe zygote dividing along the animal-vegetal axis, the cell is nowdividing perpendicular to the A-V axis (as if a globe were dividedin halves at the equator plane). You decide to repeat HansDriesch’s 19th century experiments, carefully separate theresulting blastomeres and let them develop further.
True or false?
Since sea urchins are known to have highly regulativeearlydevelopment, you expect to see normally developing embryos.Explain youranswer.
