#Question id: 7274
#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 |
#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: 7276
#Unit 5. Developmental Biology
The
cells that make up a tetrapod limb arise from three developing tissues:
The
____a______ will provide skeletal precursors to the limb.
The
_____b____ will provide muscle precursors to the limb.
The
_____c____ will provide the skin of the limb.
Which of the following option is correct?
#Question id: 7277
#Unit 5. Developmental Biology
According to this model, Which of the following statements are correct?
#Question id: 7278
#Unit 5. Developmental Biology
The following demonstrates the blastocoel formation in the mammals. Which of the following statement is correct?
#Question id: 7279
#Unit 5. Developmental Biology
X chromosome number alone is the primary sex determinant in normal drosophila because: