answer : i suppose the second one is better due to its more in deep explanation hope my opinion helps you
Answer:
The total number of chromosome in a skin cell is equal to 78
Explanation:
The sperm is usually haploid i.e it will contains only half of the total chromosome number.
Therefore , if the total number of chromosomes is "n" , then the number of chromosome in the sex cell will be "n/2"
Thus, 39 chromosome is just the half of total chromosome number.
Now a skin cell is a diploid cell and it will contain all the chromosome i.e "n"
As we know

Hence, the total number of chromosome in a skin cell is equal to 78
Drastic change in pH or temperature because the enzyme reaction may become denatured.
The complementary strand<span> for </span>DNA<span> must follow the base pairing and polarity rules. Pairing means that A=T and G=C. Polarity means that the </span>strands<span> have to run in opposite directions. First </span>write<span> the correct base pairing </span>below the original sequence<span> and label the 5' and 3' ends.</span>
Answer:
Prokaryote! The ones with a nuclear membrane are Eukaryotes.