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Genetics

Our knowledge of cells, how they react and how they can be manipulated, is advancing rapidly. Words such as cloning, genetic manipulation, GMO’s and gene therapy are becoming part of the everyday vocabulary in the media. Cell-biology, genetics and related fields are becoming even more important study disciplines.

Core information is passed on during the process of fertilisation. This information can be described as the plan according to which the new organism is to develop. The plan is inscribed in a special molecule, known as DNA. DNA consists of codes. These codes determine all the features of the new organism.

These codes are found in short units called genes. The study of this molecule and structures such as genes, and the way in which it is passed on from one generation to the next, is called genetics.

Activity 2:

To find information on genetic manipulation

[lo 1.7, 2.2]

Do the following on your own:

a) Go to the library and find information on different types of plants that have been genetically manipulated to ensure a higher production of crops. This is an example of how technology is used for development. Write down in your own words what you understand under genetic manipulation, and what is meant by technology. Find out what happens in laboratories, and how scientists in different fields contribute to the development of a country.

b) Visit the following website on the internet (you will be able to find many others):

Google.com:

Saby Ganguly: From Bengal Famine to the Green Revolution (Use the title or key words in the title to execute a search).

Peter Rosset, Joseph Collins, Francis Moore Lappé: Lessons from the Green Revolution , Tikkun Magazine, March/April 2000

DIscuss the following statements in groups of two:

Activity 3:

To determine the effects of the use of toxic substances on human beings and the environment

[lo 2.1]

Pesticides can be applied to protect crops against damage from insects. It may, however, also have a negative influence on the eco-system.

  1. Get absolute clarity on the meaning of the above statement.
  2. Find out what detrimental effects the use of pesticides may have on human beings and the environment.

Activity 4:

To establish if food production in the rsa is sufficient to meet the needs of the people

[lo 2.3]

The big challenge facing the agricultural sector, is to produce enough food to provide for the world’s fast growing population. In certain parts of the world, however, there are already people who cannot be fed sufficiently, and even die of hunger. According to the figures of the World Bank, over 840 million people in the world did not have enough to eat in the year 2000. In developing countries about 30 people per minute die of a food shortage. The production of food will have to increase by 50% to feed the additional two billion of people towards the year 2025. This makes the present situation much more complex than before the beginning of the Green Revolution in the 1970’s.

  1. Is this also happening in our country?
  2. Are there also people who eat too much?

Questions & Answers

what is economic
Charles Reply
what are the type of economic
Charles
macroeconomics,microeconomics,positive economics and negative economics
Gladys
what are the factors of production
Gladys
process of production
Mutia
Basically factors of production are four (4) namely: 1. Entrepreneur 2. Capital 3. Labour and; 4. Land but there has been a new argument to include an addition one to the the numbers to 5 which is "Technology"
Elisha
what is land as a factor of production
Gladys
what is Economic
Abu
economics is how individuals bussiness and governments make the best decisions to get what they want and how these choices interact in the market
Nandisha
Economics as a social science, which studies human behaviour as a relationship between ends and scarce means, which have alternative uses.
Yhaar
how will a country's population be equal to it's labour force
Hope Reply
what is the meaning of ppf
Obeng Reply
What is Economic
Governor Reply
economic
Nwosu
Economics is the social science that deals with the unlimited human wants in the face of scarce (limited in supply) resources.
Azka
what is market
Gift Reply
marker is the interaction of buying and selling
David
market refers to the interaction of the processes of buying and selling of commodities between the buyer and the seller.
stephen
market is a place where two parties gather to facilitate exchange of goods and services.
Yhaar
what are some good sources of information to find trends in various Industries
James
how do on know that marketing is going on
Mutia
what is consumption
Raj
Using revenue
Prince
What is stock market
Prince
What are the marmet function
Odirile Reply
price elasticity of demand is the degree of responsiveness of a quantity demanded to the change in price of the commodity in question.
Gladys Reply
What does elasticity mean
Prince
Elasticity means change in demand with the change in price. It is elastic if the demand changes with the price change whereas it is inelastic if the demand is not affected due to change in price
Devesh
Okay
Olatunde
meaning
KP
okay
Binta
I have a question
Binta
what is the importance of learning economics?
Thelma Reply
it helps to make the correct choice
Gladys
it helps firm to produce products that will bring more profit
Gladys
the difference between needs and wants
londiwe Reply
needs are things that we basically can't live without wants are just luxury things
Thelma
needs are things without them we can't live but want are things without we can live
KP
what is education
KP
it's a process in which we give or receiving methodical instructions
Thelma
what is mixed economy
Amex
what is a deadweight loss? how monopoly creates a deadweight loss?
Ashraf Reply
who are u?
Lamine
haha
Cleaford
scarm
nura
what it this
Cleaford
hi y'all
Dope
how does group chat help y'all 🤔
Dope
hi y'all
Dope
how does group chat help y'all 🤔
Dope
how does group chat help y'all 🤔
Dope
to learn from one another
Lamine
oh okay
Dope
😟
Creative
Yes
Lamine
what is type of economic
taiwo Reply
how to understand basics of economics
Aarif Reply
what is demand schedle
Princess Reply
When you make a Scedule of the demand you made
Rodeen
this is helpful for rbi grade b
Prema Reply
What is macroeconomics
Kauna Reply
It's one of the two branches of Economics that deal with the aggregate economy.
Mayen
it's about inflation, occupation, gdp and so on
alberto
What is differences between Microeconomics and Macroeconomic?
Bethrand
microeconomics focuses on the action of individual agents in the economy such as businesses, workers and household. while macroeconomics looks at the economy as a whole. it focuses on broad issues in the economy such as government deficit, economy growth, levels of exports and imports, and
Thelma
inflationary increase in prices
Thelma
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Source:  OpenStax, Geography grade 9. OpenStax CNX. Sep 14, 2009 Download for free at http://cnx.org/content/col11057/1.1
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