Human Biotechnology

Human Biotechnology

In this lesson, you will review how DNA technology is used to modify an organism's DNA.

Modern genetics uses DNA technology.

• Changes in DNA can change an organism.

• Random changes in DNA may introduce new traits into an organism.

• Over time, certain traits may become more common in one group of organisms as they interact with the environment and each other.

Selective Breeding

• The process of selecting and breeding parent organisms to pass on particular traits to the offspring.

• Downfall- leads to lack of genetic variation

• Example- crops, agriculture

Multiple Choice

Selective breeding is...

• a process to create an organism with desired traits from parents with those desired traits

• natural method of producing offspring with desired traits

• creating a new species

• making organisms reproduce during times of stress

Multiple Choice

An example of selective breeding is

• a dog breeder mating 2 dogs to make more dogs

• a farmer grows bees to pollinate the plants on his farm

• a person pollinates 2 white rose plants to only create white roses

Multiple Choice

One problem with selective breeding is

• creating a new species

• gene variety is lost

• extinction of a species

Genetic engineering

• Used to introduce new traits into an organism

• Produce medicines and other products

• Identify individuals

• Clone genes as well as organisms

• Sequence the genome of an organism

Multiple Choice

Genetic engineering has been used to produce

• medicines.
• food animals.
• improved crops.
• all of these.

Multiple Choice

What are genetically modified (GM) organisms and GM foods?

• Foods or organisms with better taste

• Foods or organisms grown in the USA, only

• Foods or organisms with DNA modified in a way that doesn't occur naturally

• Food and organisms that have been injected with hormones

Open Ended

What are some risks and benefits associated with using genetic engineering in food crops?

Poll

How do you rate your understanding of DNA technology to change an organism's genes?

• I don't get it. I might need help.

• I get some of it. I might need help.

• I get it. I can do it by myself.

• I've got it and I can teach it to a friend.