#Question id: 7275
#Unit 5. Developmental Biology
The following experiment is designed to study the role of several hormones in the regulation of metamorphosis in frogs.
|
Group # |
Treatment |
Days
to Metamorphosis |
|
1 |
Saline |
30 |
|
2 |
Prolactin |
> 100 |
|
3 |
TSH |
15 |
|
4 |
Thyroxine |
10 |
|
5 |
Corticosterone |
30 |
|
6 |
Thyroxine
+ Corticosterone |
5 |
|
7 |
Prolactin + TSH |
30 |
|
8 |
Thyroid gland
removed |
> 100 |
If the thyroid gland were removed from the tadpoles in Group 4, metamorphosis would
#Question id: 5261
#Unit 8. Inheritance Biology
Which of these statements about prokaryotes is correct?
#Question id: 10246
#Unit 10. Ecological Principles
Under an ideal free distribution:
#Question id: 13219
#Unit 6. System Physiology – Plant
#Question id: 5016
#Unit 11. Evolution and Behavior
Approximately how far back in time does the fossil record extend?