Skip to content | Accessibility - list of access keys used on this site | Sitemap
Find what you need to know

Home > Subjects > Biology > Level 1 > 1.3 Genetics > Subject content

  • Subject: Biology
  • AS: AS90163
  • Level: 1
  • Credits: 3
  • External

Biology 1.3 Describe the transfer of genetic information

Subject content

Make sure you have up-to-date course notes. Use them, and if you haven't got them, see your teacher. These are the topics you may be tested on:

  • the roles of, and relationships between, chromosomes, genes, alleles, and DNA
  • the structure and replication of DNA and its role in the transfer of genetic information (the structure is limited to double helix, molecular groups [sugar, base, phosphate] base pairing)
  • mitosis and meiosis:
    • purpose
    • where they occur
    • sequence of events (the names of stages are not required). Have a look at these animations of the stages of animal cell mitosis or AS Guru: mitosis.
    • reasons for chromosome number of cells
    • significance of the number of cells produced
  • solution of genetic problems:
    • limited to sex determination
    • simple monohybrid inheritance patterns for alleles showing complete dominance
  • applications of genetics:
    • selective breeding
    • breeding techniques
    • genetic modification
    • cloning
  • know these terms:
    • variation
    • gamete
    • zygote
    • fertilisation
    • chromosome
    • karyotype
    • gene
    • allele
    • dominant
    • recessive
    • homozygous
    • heterozygous
    • pure breeding
    • genotype
    • phenotype
    • trait
    • characteristic
    • phenotype ratio
    • Punnett square
    • pedigree chart
    • semi-conservative

To find the definitions of these terms and the concepts of genetics that you need to know, check out BBC Revision Bite – Inheritance. Note that reference is made to the monohybrid cross. This is the same as monohybrid inheritance.


Back to top

0

People logged in

17

People surfing this site

Most recent posts

English
Forums locked

Posted by: project

7:08am 04.12.2008

Mathematics
Forums locked

Posted by: project

7:08am 04.12.2008

Science
Forums locked

Posted by: project

7:07am 04.12.2008

Physics
Forums locked

Posted by: project

7:07am 04.12.2008

Biology
Forums locked

Posted by: project

7:07am 04.12.2008

Chemistry
Forums locked

Posted by: project

7:06am 04.12.2008

Other
Forums locked

Posted by: project

7:06am 04.12.2008