DNA Profile

The image shows gel electrophoresis of a puppy and four probable mothers marked from P-S.

Based on the results of the gel electrophoresis, which lane represents the DNA of the birth mother of the puppy?

• P

• Q

• R

• S

Tags

NGSS.HS-LS3-1

Identify the labeled bands in the gel electrophoresis image.

a

b

c

d

e

f

300

290

840

200

730

580

STR stand for

• Short Tandem repeats

• Short Tangible Repeats

• Surely Tandem Repeats

• Small Tandem Repeats

Which two bear species are most closely related?

• Bear 1 and Bear 2

• Bear 1 and Bear 3

• Bear 2 and Bear 3

• There’s no way to tell

Tags

NGSS.MS-LS4-2

Which part(s) of a hair can be analyzed for DNA?

• root

• cuticle

• medulla

• cortex

There are multiple male suspects involved in a case. Which of the following analysis techniques would be most helpful in differentiating the men from one another ?

• Y-Marker Analysis

• SNP Analysis

• Amelogenin Gene Analysis

• Mitochondrial DNA Analysis

Tags

SFS3

Data points are used to determine which base pairs match within the gel. If the pairs match, there is a high likelihood that both strands belong to the same individual.

• Analyze DNA

• Gel Electrophoresis

• Use Restriction Enzymes

 Why are restriction enzymes used when making a DNA fingerprint using STRs?

• They are used to determine the size and shape of DNA fragments.

• They are used in order to allow us to determine if a specific family or family member is related to the crime based on their DNA fragments.

• STR bands are units of bases that are typically two to five bases long and repeat multiple times. Restriction enzymes cut these bands since they match the enzyme, making them easily recognisable.

DNA can be used for ...

• determining paternity

• identifying human remains

• identifying a suspect

• All of these

Tags

SFS3

Why are restriction enzymes used when making a DNA fingerprint using STRs?

• They are used to determine the size and shape of DNA fragments.

• They are used in order to allow us to determine if a specific family or family member is related to the crime based on their DNA fragments.

• STR bands are units of bases that are typically two to five bases long and repeat multiple times. Restriction enzymes cut these bands since they match the enzyme, making them easily recognisable.