The results of gel electrophoresis are shown below, with four different strands of DNA labeled
electrode
=
| | ||
T
Which strand of DNA is the shortest?
O A 3
Х
B. 1
O C. 4
OD. 2
Not B

option c is correct that is 4

Explanation:

in gel electrophoresis the fragments are separated by size the largest fragments are closest to the top and the smallest are closest  to the bottom so strand 4 is closest to bottom so shortest strand is strand 4

the transfer for conduction is the heat transfering from the liquid to the spoon

the transfer for convection is the heat rising from the liquid to the air

the transfer for radiation is the heat going through the sides of the cup and to the air

at least that is what i would do

this is math not biology xd