Gene Transcription & RNA modification pt 3 (2)

Question 1

What are some benefits of alternative splicing?

Answer 1

Since it allows two or more different polypeptide sequences to be derived from a single gene which can allow an organism to carry fewer genes in its genome

Question 2

The 5’ is _________

Answer 2

Cap where methyl guanosine is added

Question 3

5’ cap is ________ where splicing can occur & it can move to the cytoplasm

Answer 3

Bounded by proteins

Question 4

PolyA tail at 3’ end

Answer 4

Adds a lot of adenosine (A) & is used to stabilized mRNA & is used for translation

Question 5

Describe the 3’ poly A tail process

Answer 5

1. The 3’ end is cleaved after the AAUAAA sequence

2. Polymerase adds As (adenosine) to form a poly A tail

Question 6

Editing can change an mRNA sequence how?

Answer 6

1. Addition
2. Deletion
3. Substitution

Question 7

Why is editing important?

Answer 7

It can change an mRNA sequence which can change the protein sequence which can change the way the protein function