Genetic Variation and Diversity

What is fertilization?

• When you put food on the plants

• The joining of the egg and sperm

• A part of mitosis

• The last step of meiosis

The variety of genes and alleles that exist in organisms

• independent assortment

• chromosomal abnormalities

• genetic diversity

• mutations

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NGSS.HS-LS3-2

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

• mutation

• segregation of homologs

• independent assortment of homologous pairs

• mitosis

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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

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Which process is shown in the image?

• crossing over

• independent assortment

• segregation

• mutation

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. 

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NGSS.HS-LS4-2

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a slight difference in the appearance of individual members of a species

• comparative anatomy

• variation

• homologous structures

• analogous structures

Tags

NGSS.HS-LS3-2

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a characteristic of a species that enables the species to survive in its environment

• adaptations

• comparative anatomy

• analogous structures

• homologous structures

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NGSS.HS-LS4-2

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Inherited traits are controlled by

• nucleus

• chromosomes

• genes

• cells

Tags

NGSS.HS-LS3-1