1. The structure of DNA is a double helix, composed of two antiparallel strands held together by hydrogen bonds between complementary nitrogenous bases (adenine with thymine, guanine with cytosine).
2. DNA replication is semi-conservative, meaning each strand of the original DNA molecule serves as a template for the synthesis of a new complementary strand.
3. Messenger RNA (mRNA) is synthesized from a DNA template during transcription and carries the genetic information from the nucleus to the ribosome for protein synthesis.
4. During translation, the ribosome reads the mRNA sequence in sets of three nucleotides called codons, each specifying a particular amino acid.
5. Transfer RNA (tRNA) molecules bring the correct amino acids to the ribosome, matching their anticodon to the mRNA codon, allowing the ribosome to assemble the polypeptide chain.
Parent Tip: Review the logic above to help your child master the concept of dna the double helix worksheet answers.
