Which of the following are true regarding the splicing of tRNA 

a.RnaseP cuts at 5’ end 

b.RnaseD cuts at 3’ end 

c.Base modification followed by CCA addition by specific polymerase

d.And then final script of 78 bp formed

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#Question id: 15855

#Unit 5. Developmental Biology

In which drosophila developmental stage early promoter becomes active and the Sxl gene is transcribed?

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#Question id: 3878

#Unit 3. Fundamental Processes

Which of the following statements about the synthesis of rRNA and tRNA in E. coli is true?

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#Question id: 4308

#Unit 3. Fundamental Processes

Most repressor proteins are allosteric. Which of the following molecules binds with the repressor to alter its conformation and therefore affect its function?

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#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

 If the thyroid gland were removed from the tadpoles in Group 3, metamorphosis would

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#Question id: 5543

#Unit 5. Developmental Biology

What is the purpose of the chorion in terrestrial vertebrate embryos?