100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Summary Genetics and Genetic Engineering: Matric Life Sciences R50,00
Add to cart

Summary

Summary Genetics and Genetic Engineering: Matric Life Sciences

2 reviews
 58 views  1 purchase

A concise, bullet-pointed summary on Genetics. Covers strictly what you need to know for all tests and assessments (as dictated by the SAGS guidelines). Includes annotated diagrams and images to illustrate points mentioned, as well as additional research, helpful when understanding the work

Preview 2 out of 13  pages

  • October 16, 2020
  • 13
  • 2020/2021
  • Summary
All documents for this subject (9)

2  reviews

review-writer-avatar

By: Ora123 • 2 year ago

review-writer-avatar

By: neocmatlou16 • 3 year ago

avatar-seller
chloevanbeukering
Genetics

Gregor Mendel, the father of genetics
• Gregor Mendel started a series of experiments on garden peas that would reveal several
fundamental principles of genetics
• Over a 10 year period he studied inheritance in pea plants
• Mendel used pea plants to study how a particular characteristic was passed down from
one generation to the next
• The pea plants that he used had opposing characteristics eg. Long stem vs short stem
• First he test planted them for 2 years and self pollinated them by hand to make sure
that they were homozygous (pure-breeding), hence their offspring were identical for
many generations
• The first set of plants that is crossed in an experiment is called the parental generation
(P) and their offspring is called the first filial generation (F1)
• F1 generation can be self or cross pollinated and their offspring is called the second
filial generation (F2)
• Mendel found that the inheritance of characteristics is determined by genes
• He also found that genes for a particular characteristic occurred in pairs and within the
pair, the genes may be the same or different
• If the genes were different then the action of the one of the two was dominant and the
other recessive


Genetics: the study of the behaviour of genes
Genes: the hereditary factors contained on the DNA, pairs of genes on each homologous
chromosome / sections of DNA that code for a characteristic
Characteristics/traits: how the gene is expressed eg. The gene of eye colour gives you
blue or brown eyes
Locus: the position on the chromosome where a certain gene is found
Allele: the name given to genes which copy corresponding loci on a homologous pair of
chromosomes, only two alleles for each gene
Monohybrid cross: a genetic cross between parents for only one gene
Homozygous: the 2 alleles on corresponding loci are the same
Heterozygous: the 2 alleles on corresponding loci are different
Dominant: the gene in a heterozygous pair shows its characteristics

1 of 13

, Genotype: the genetic makeup present in an organism
Phenotype: describes the visible physical appearance




Family Trees / Pedigree charts
• A pedigree diagram is a construction of a set of symbols that allows for us to record a
particular phenotypic trait in many generations of a family
• Helps to see whether a couple is likely to pass on a genetic disease
• Reveals several generations of individuals in a family
• How to read a pedigree chart
• Number every generation from top to bottom in roman numerals
• Number each individual starting with the top left and moving right and down
• Males are represented by squares and females by circles
• Darkened shapes represent affected individuals




2 of 13

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through EFT, credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying this summary from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller chloevanbeukering. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy this summary for R50,00. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

47561 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy summaries for 15 years now

Start selling
R50,00  1x  sold
  • (2)
Add to cart
Added