In DNA the nucleotide containing cytosine always pairs with

In DNA, the nucleotide containing cytosine always pairs with the nucleotide containing guanine adenine cytosine thymine The RNA type which brings amino acids to a ribosome Is rRNA mRNA tRNA SRNA Erwin Chargaff discovered that DNA contained four bases - A, T, C, and G amounts of bases A, T, C, and G were the same from species to species DNA had a helical structure the amount of base A equaled the amount of base T and the amount of base C equaled that amount of base G present in a species The x-ray diffraction pattern of DNA discovered by Rosalind Franklin showed that DNA_ A. is helical is fibrous has a repeated pattern is both helical and has a repeated pattern Watson and Crick resolved the structure of DNA by: Chemical analysis of DNA X-ray study of DNA crystal Producing a model with tin and wires None of the above.

Solution

1). cytosine can formthree hydrogen bonds with guanine, and adenine can form two hydrogen bonds with thymine.

A. Guanine

2). a type of RNA molecule that helps decode a messenger

C. tRNA

3). Chargaff\'s rules states that DNA from any cell of all organisms should have a 1:1 ratio (base Pair Rule)

D.  that the amount of guanine is equal to cytosine and the amount of adenine is equal to thymine

4). made contributions to the understanding of the molecular structures of DNA.

A. helical

5). the twisted-ladder structure of deoxyribonucleic acid discovered by Watson and Crick.

B. X-ray study of DNA crystal