lab module 2 exam

Question 1

male zebra fish have what characteristics

Answer 1

more sleek/torpedo shaped and pinker and more orange

Question 2

female zebra fish characteristics

Answer 2

rounder belly, females have a yellow dorsal fin

Question 3

why is it had to sex zebra fish

Answer 3

zebrafish in the wild do have a chromosomally
based system and that this has been lost in laboratory strains, they have to be sexed when they are old enought to show signs

Question 4

Zebrafish have three different types of pigment cells what are they

Answer 4

Melanophores are black, due to their

generation of melanin, Xanthophores are yellow and Iridophores are silver

Question 5

If a fish carrying a mutation or transgene is mated with a wild type fish, then this is called an

Answer 5

outcross

Question 6

If a fish carrying a mutation or transgene is mated with one of its siblings, then this is called an

Answer 6

incross