Bio Sem Rev.

What causes genetic variation in meiosis?

• chromosomes lining up
• crossing over of chromosomes
• separation of chromosomes
• chromosomes pulling apart

Tags

NGSS.HS-LS3-2

Chromosomes exchange genetic material during 

• crossing over
• replication
• synthesis
• translation

Tags

NGSS.HS-LS3-2

Compared to the number of chromosomes contained in a body cell, how many chromosomes would normally be contained in a gamete?

• The same number
• One-fourth as many
• Twice as many
• Half as many

Tags

NGSS.HS-LS3-2

A human being has a somatic cell that has 46 chromosomes.  What is the haploid number found in a gamete?

• 23
• 46
• 69
• 92

Tags

NGSS.HS-LS3-2

What mutation has occurred here?

T-G-A-C-C-A

T-G-A-G-C-A

• Substitution

• Deletion

• Insertion

• Frameshift

Tags

NGSS.HS-LS3-2

DNA molecule segment is : TTACGCAAG

The mutated DNA segment is TTACGCAAC. This is an example of ___ mutation.

• Substitution

• Insertion

• Inversion

• Translocation

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

ATT-TGA-GCC- Original

ATT-GAG-CC - Mutated

The example above is an example of a

• Insertion- Frameshift

• Deletion- Substitution

• Deletion -Frameshift

• All of the above

Tags

NGSS.HS-LS3-2

NGSS.HS-LS1-1

What mutation has occurred here? 
T-G-A-C-C-A
T-G-A-G-C-A

• Substitution
• Deletion
• Insertion
• Frameshift 

Tags

NGSS.HS-LS3-2

Which Karyotype displays a female with Down syndrome?

• 
• 
• 
• 

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

At high temperatures enzyme activity declines because of:

• Denaturation
• Decreased Kinetic Motion
• Increased H-Bonding
• Dissociation of Ionic Compounds

Tags

NGSS.HS-PS1-5