Genetic Variation

The variety of genes and alleles that exist in organisms

• independent assortment

• chromosomal abnormalities

• genetic diversity

• mutations

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

Which of the following is NOT a source of genetic diversity?

• mutation

• segregation of homologs

• independent assortment of homologous pairs

• mitosis

Tags

NGSS.HS-LS3-2

This law describes how each member of a homologous pair is pulled randomly to one side or another in anaphase I

• Law of Segregation

• Law of Independent Assortment

• Law of Gravity

• Law of Mathematical Order

This law describes how each homologous pair separates independently of any other pairs during Anaphase I of meiosis

• Law of Segregation

• Law of Independent Assortment

• Law of Gravity

• Law of Mathematical Order

Tags

NGSS.HS-LS3-2

The exchange of pieces of chromatin between homologous chromosomes during Prophase I of meiosis is called

• independent assortment

• mutation

• crossing over

• random fertilization

Any change in the sequence of DNA is a

• recombination

• mutation

• chromatin

• independent assortment

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

Which process is shown in the image?

• crossing over

• independent assortment

• segregation

• mutation

Tags

NGSS.HS-LS3-2

During which phase of meiosis does the process shown in the image occur?

• Prophase I

• Anaphase I

• Metaphase I

• Telophase I

Tags

NGSS.HS-LS3-2

Crossing over is important because....

• It prevents mutations from entering the gametes. 
• It allows for even distribution of chromosomes in the gametes.
• It allows for more genetic diversity of gametes.
• It allows for genetic uniformity of gametes. 

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

Which source of genetic variation is NOT a result of sexual reproduction?

• Crossing over

• Independent assortment (due to random orientation

• Gene mutation

• Random fertilization

Tags

NGSS.HS-LS4-2