Beetle and Tatum's Genetic Discoveries

Beetle and Tatum's Genetic Discoveries

Assessment

Interactive Video

Biology

10th - 12th Grade

Hard

Created by

Patricia Brown

FREE Resource

In 1941, George Beetle and Edward Tatum demonstrated that each gene encodes a specific enzyme, confirming Sir Archibald Garrod's theory of inborn errors of metabolism. Using Neurospora crassa, they showed that mutations in genes could lead to nutritional deficiencies, such as the inability to synthesize Vitamin B6. Their work laid the foundation for understanding genetic mutations' role in metabolic pathways, particularly in the synthesis of amino acids like arginine. This research provided biochemical proof that one gene is responsible for one enzyme, revolutionizing genetics and biochemistry.

Read more

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did George Beetle and Edward Tatum demonstrate through their experiments on Neurospora crassa?

Genes do not affect enzyme production.

Each gene encodes one enzyme.

Each gene encodes multiple enzymes.

Enzymes are not related to genes.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of Neurospora being a haploid organism in genetic experiments?

It does not affect genetic studies.

It complicates genetic analysis.

It simplifies the study of dominant and recessive alleles.

It has multiple copies of each gene.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How did Beetle and Tatum induce mutations in Neurospora?

By using chemical mutagens.

By exposing it to ultraviolet light.

By using X-rays.

By altering its diet.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the first mutant discovered by Beetle and Tatum unable to synthesize?

Vitamin C

Vitamin B6

Sugars

Amino acids

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What method did Beetle and Tatum use to identify specific metabolic pathway defects in mutants?

Genetic sequencing

Microscopic examination

Nutritional supplementation

Chemical analysis

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which amino acid's synthesis pathway was studied by Beetle and Tatum using mutants?

Lysine

Arginine

Histidine

Glutamine

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did the discovery of different mutants needing specific supplements demonstrate?

Genes do not affect metabolic pathways.

Each gene affects a specific step in a pathway.

Each gene affects multiple pathways.

All genes are identical.

Create a free account and access millions of resources

Create resources
Host any resource
Get auto-graded reports
or continue with
Microsoft
Apple
Others
By signing up, you agree to our Terms of Service & Privacy Policy
Already have an account?