ZOO 3050 Lecture Notes - Lecture 11: Zona Pellucida, Oviparity, Cell Cycle

55 views6 pages

Document Summary

Implications: hybridization, species-specific signals are critical for fertilization, self-fertilization, advantages from selection perspective, can also lead to expression of deleterious mutations, in-vitro fertilization. In some cases there are intermediate stages (can feed but they don"t have to: gradient of developmental or feeding modes, viable hybrids between these two species, larvae of these hybrids show an intermediate mode of development. Depends whether sperm or egg comes from one or the other species. Really important which species the egg comes from. Sperm comes from tuberculata (feeding species) and egg comes from non-feeding species. Wouldn"t work the opposite way because the maternal reserves are in the egg. Two species, one is feeding and the other species on the bottom is not feeding. If you cross these two species you get the formation of a gut. If the sperm is from the feeding species then you don"t get a gut. The feeding species is contributing the material to form a gut.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents