Question

12/5 bellwork

1. a permanent change in dna is defined as which of the following?

a. mutation b. cancer c. mitosis d. replication

1. what is the end result of transcription and translation?
2. what is the complementary mrna strand of tacgga?

q2 lsa next tuesda

Explanation:

Question 1

To solve this, we recall definitions: Mutation is a permanent change in DNA. Cancer is a disease from abnormal cell growth, Mitosis is cell division, Replication is DNA copying. So the correct option is a.

Transcription makes mRNA from DNA, translation uses mRNA to make proteins (polypeptides). So the end result is a protein (or polypeptide chain) being synthesized, which is the expression of a gene into a functional product.

Step1: Recall base pairing for mRNA

In transcription, DNA's T pairs with A (in mRNA), A pairs with U, C pairs with G, G pairs with C.

Step2: Translate each DNA base

DNA strand: T A C G G A

• T (DNA) → A (mRNA)
• A (DNA) → U (mRNA)
• C (DNA) → G (mRNA)
• G (DNA) → C (mRNA)
• G (DNA) → C (mRNA)
• A (DNA) → U (mRNA)

So mRNA strand: A U G C C U

Answer:

a. Mutation

Question 2