wiz-icon
MyQuestionIcon
MyQuestionIcon
157
You visited us 157 times! Enjoying our articles? Unlock Full Access!
Question

1.7 m double helical DNA will have ______ base pairs.

A
5×109
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
34×109
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
17×105
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
1.7×109
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 5×109
Number of base pairs
Length of one complete turn of a DNA double helix = 34 Å = 34 x 10-10 m Number of base pairs in a complete turn of DNA double helix = 10 bp
Therefore, 34×1010m of DNA has 10 bp
So, 1m of DNA will have = 10/ (34×1010) bp Thus, 1.7 m of DNA will have = 10×1.7 5×109 bp = 5×109 bp

Final answer
(B) 5×109

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
Join BYJU'S Learning Program
CrossIcon