Genetic Factors in Flower Color

Genetic Factors in Flower Color

Assessment

Interactive Video

Biology

10th - 12th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial covers the separation of DNA fragments using electrophoresis, explaining how different sizes and charges affect movement through agarose gel. It also discusses gene mutations, specifically deletion mutations, and their impact on gene structure. The tutorial further explores analyzing electrophoresis results to determine flower color based on gene expression, highlighting the role of functional genes and enzymes in producing different flower colors.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of electrophoresis in DNA analysis?

To clone DNA fragments

To amplify DNA sequences

To separate DNA fragments based on size and charge

To sequence DNA

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do smaller DNA fragments behave during electrophoresis?

They move faster and cover more distance

They move at the same speed as larger fragments

They remain stationary

They move slower and cover less distance

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the effect of a deletion mutation on a gene?

It removes one or more nucleotides causing a frame shift

It duplicates the gene

It adds extra nucleotides

It has no effect on the gene structure

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the context of geraniums, what does a deletion mutation in gene A result in?

An increase in flower size

A frame shift altering the gene structure

A duplication of gene A

No change in flower color

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the presence of a band in electrophoresis results indicate?

The absence of any genes

The presence of only gene A

The presence of non-functional genes

The presence of functional genes

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If both genes A and B are functional, what color will the flower be?

White

Pink

Purple

Red

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What flower color is expressed if only gene A is functional?

White

Pink

Purple

Yellow

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