Question

1. The term "double helix" as it is used to describe DNA refers to the the fact that DNA is comprised of 2 DNA strands that are twisted together to form a spiral.

   True

   False

2. The genotype ratio compares the number of times each genotype would be produced in the offspring of a mating.

   True

   False

3. If one strand of a segment of DNA has a base sequence of A-G-C-A-T, its complementary strand would be T-C-G-T-A.

   True

   False
   

4. t RNA:

   		carries amino acids
   		is where an anti-codon would be found
   		both A and B are true statements
   		neither A or B are true statements

Answer 1

1) True

Explanation: It is called double helix as there are two strands of the DNA wound with each other in the form of a spiral steps with the help of hydrogen bonds.

2) True

Explanation: A genotype ration is a ratio that mentions how many times a particular genotype (say, with a cross between Tall plants (genotype: Tt) and dwarf plants (Genotype: tt), the offsprings can be both Tall and dwarf. and the genotype ratio will be 1:1.(Tt:tt))

3) True

Explanation: In DNA, The A pairs/complements with T and G compliments with C. This complementation happens with the help of hydrogen bonds. A and T forms 2 hydrogen bonds and G and C forms three hydrogen bonds. Hence the complimentary sequence is correct.

4) Both A and B are true statement

Explanation: The tRNA carries the amino acids and plays a vital role during translation. As the ribosomes/rRNA reads the mRNA, the aminocids to form a protein/peptide is carried by the tRNA to the mRNA-rRNA ribosome complex. Also tRNA contains anticodon in the anticodon loop. this helps in picking up the aminoacid.