#Question id: 5651
#Unit 5. Developmental Biology
Growth and development of plant parts involves ________.
I) cell division to produce new cells
II) enlargement and elongation of cells
III) specialization of cells into tissues
#Question id: 5652
#Unit 5. Developmental Biology
What generalization can be applied to the pole plasm of Drosophila, the P-granules of C. elegans, the yolk-free vegetal cytoplasm of Xenopus, and the localized mRNA for vasa in zebrafish?
#Question id: 5653
#Unit 5. Developmental Biology
Why is meiosis required for germ cell formation, yet is never used by somatic cells?
#Question id: 5654
#Unit 5. Developmental Biology
Two human disorders, Prader-Willi syndrome and Angelman syndrome, occur when a small deletion in a specific region of chromosome 15 is contributed by either the father or mother, respectively. Why does this small deletion not behave as a recessive allele for either syndrome, that is, why is its loss not made up for by the good copy of the region on chromosome 15 contributed by the other parent?
#Question id: 5655
#Unit 5. Developmental Biology
What is the "acrosomal reaction"?
#Question id: 5656
#Unit 5. Developmental Biology
What is the cortical reaction, and why is it important?