Lecture 4

Question 1

What are some features of explosive breeding?

Answer 1

several days, males chorus, males struggle over females, dense aggregation

Question 2

What are some features of prolonged breeding?

Answer 2

2-3 months, males call to attract females, males dont search, territorial, short amplexus

Question 3

What is amplexus

Answer 3

mating position of frogs where male grasps female

Question 4

what are the 3 mechanisms for internal fertilization

Answer 4

Copulatory organ, cloaca to cloaca, spermatophore

Question 5

What are nupital pads?

Answer 5

aids with grips for males during amplexus

Question 6

What is associated breeding

Answer 6

gonadal and hormonal events of males and females coincides

Question 7

what is dissociated breeding?

Answer 7

gonadal and hormonal events dont coincide

Question 8

What is continuous breeding

Answer 8

one sex continually sexually reproductive

Question 9

What is parthenogenesis

Answer 9

females reproduce without males/sperm

Question 10

What is hybridogenesis?

Answer 10

Half of parental genime is passed on while other half isnt

Question 11

What is gynogenesis and kleptogenesis

Answer 11

unisexuals produce unreduced eggs, sperm DNA not incorporated into DNA of off spring (gynogenesis) or sperm is incorporated into embryo (kleptogenesis)

Question 12

What is oviparity?

Answer 12

embryos develop in eggs that hatch outside body

Question 13

What is ovoviviparity?

Answer 13

embryos develop in eggs that remains inside morher until they hatch, no placental attachment

Question 14

What is viviparity?

Answer 14

devlopment of the embryo inside the mother eventually leading to live birth