6) If the DNA sequence is GTAC, what will be the mRNA sequence?
a) CATG
b) CTUT
c) CAUG
d) UCGG
7) Given the codon UGC, what will be its anticodon?
a) ACG
b) TCG
c) TGC
d) AAT
To find the mRNA sequence from a given DNA sequence, you need to know the process of transcription. During transcription, DNA is converted into mRNA. Here's how you can determine the mRNA sequence for the given DNA sequence GTAC:
1) Understand the base pairing rule: In DNA, adenine (A) pairs with thymine (T), and guanine (G) pairs with cytosine (C).
2) When converting DNA to mRNA, thymine (T) is replaced with uracil (U) because RNA uses uracil instead of thymine.
Now, let's apply these steps to find the mRNA sequence for the DNA sequence GTAC:
1) Replace T with U in the DNA sequence GTAC, giving you GUAC.
2) This gives you the mRNA sequence GUAC.
Therefore, the correct answer is c) CAUG.
Moving on to the next question:
To determine the anticodon from a given codon, you need to know the process of translation. During translation, mRNA is converted into proteins. The anticodon is a sequence of three nucleotides on transfer RNA (tRNA) that is complementary to the codon on mRNA.
Given the codon UGC, let's find the anticodon:
1) Understand the base pairing rule: In DNA and RNA, adenine (A) pairs with uracil (U), and cytosine (C) pairs with guanine (G).
Now, let's apply these steps to find the anticodon for the codon UGC:
1) Replace U with A, giving you AGC.
Therefore, the correct answer is c) TGC.