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For a couple of decades, biologists knew the nucleus contained DNA and proteins. The prevailing opinion was that the genetic material was proteins, and not DNA. The reason for this belief was that proteins are more complex than DNA. This is becausea.proteins have a greater variety of three-dimensional forms than does DNAb.proteins have two different levels of structural organization; DNA has fourc.proteins are made of 20 amino acids and DNA is made of four nucleotidesd.Only A and C are correcte.A, B, and C are correct
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- Phenotype describes:the outward characterstics of an individualthe genetic makeup of an individualthe number of chromosomes an individual possessesgenes that produce physical traits
- The particular position of a gene on homologous chromosomes.
- ribosomal rna - makes up bulk of RNA in a cell- a large molecule made up of thousands of nucleotides - folds into unique 3D conformation made up of many hairpin loops as a result of comp base pairing within rRNA molecule - rRNA binds with ribosomal proteins to form large + small ribosomal subunits during translation, ribosomal subunits assemble to form the ribosome - part of rRNA forms an enzyme known as peptidyl transferase (ribozymes), catalyses the formation of peptide bonds between amino acids during translation - rRNA helps to align mRNA in ribosome so anticodons of incoming aminoacyl-trna molecules can complementary base pair with mRNA codons - rRNA orientates aminoacl-trna in correct position within ribosomal binding sites (APE)