Skip to main content

You are here

Nature of Genetic Material

Genetics Learning Framework

Society Learning Goals Articles Sample Learning Objectives
Nature of Genetic Material
How is DNA organized?
show
  • Explain the meaning of ploidy (haploid, diploid, aneuploid etc.) and how it relates to the number of homologues of each chromosome.
  • Describe how the positions of individual genes on a given chromosome are related to their positions on the homolog of that chromosome.
  • Differentiate between a gene and an allele, including the recognition that genes may have many alleles.
  • Explain the functional significance of packaging DNA into chromosomes and the lack of correlation between chromosome size and genetic information content.
  • Describe the types of DNA regions that do not encode proteins: the general organization, possible function, and frequency of genes and non-gene DNA sequences in a typical eukaryotic genome.
  • Explain what is meant by single-nucleotide polymorphism (SNP) and short tandem repeat (STR), and explain how SNPs and STRs can be used as genetic markers even if they do not cause phenotypic changes.
  • Discuss how DNA is packaged in the chromosomes in terms of histones, nucleosomes, and chromatin.
What are the molecular components and mechanisms necessary to preserve and duplicate an organism’s genome?
show
  • Draw a simple line diagram showing a segment of DNA from a gene and its RNA transcript, indicating which DNA strand is the template, the direction of transcription and the polarities of all DNA and RNA strands.
  • Describe the process of mitosis, transcription, and translation. How are mistakes in these processes identified and corrected?

Announcements

No current announcements