Assuming that the average amino acid residue contributes 110 to the peptide molecular weight, what will be the minimum length of the mRNA encoding a protein of molecular weight 50,000?

TLS Online TPP Program

#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

TLS Online TPP Program

#Question id: 3295

#Unit 11. Evolution and Behavior

Males of different species of the fruit fly Drosophila that live in the same parts of the Hawaiian Islands have different elaborate courtship rituals. These rituals involve fighting other males and making stylized movements that attract females. What type of reproductive isolation does this represent?

TLS Online TPP Program

#Question id: 32425

#Unit 2. Cellular Organization

Which of the following elongated protein binds along the groove of the actin filament helix?

TLS Online TPP Program

#Question id: 4901

#Unit 8. Inheritance Biology

Assume that the alleles A (dominant) and a (recessive) show a maternal effect mode of inheritance. In a cross between an Aa female and an aa male, what would be the phenotypes of the progeny?

TLS Online TPP Program

#Question id: 1640

#Unit 4. Cell Communication and Cell Signaling

An immune response against grass pollen often involves: