Genetics - Class review

What is a gene?

• A type of cell

• A segment of DNA that codes for a trait

• A type of protein

• A type of chromosome

Tags

NGSS.HS-LS3-1

NGSS.HS-LS1-1

An allele is (a)   .

• A type of cell
• A variant form of a gene
• A type of protein
• A type of chromosome

What is the definition of genetics?

• The study of cells

• The study of heredity and the variation of inherited characteristics

• The study of proteins

• The study of ecosystems

Tags

NGSS.HS-LS3-2

Heredity is defined as (a)  

• The passing of traits from parents
• The process of cell division
• The formation of new species
• The study of ecosystems

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Identify the homozygous pair from the following:

• Aa

• BB

• Ab

• Ba

(a)   is a heterozygous pair.

• AA
• Bb
• bb
• CC

Tags

NGSS.HS-LS3-2

In a monohybrid cross between two heterozygous parents (Aa x Aa), what percentage of the offspring are expected to be homozygous recessive?

• 25%

• 50%

• 75%

• 100%

Match the following genetic crosses with the expected percentage of heterozygous offspring.

• Cross between Aa and aa

• 50%

• Cross between AA and AA

• 0%

• Cross between Aa and Aa

• 100%

• Cross between AA and aa

• 25%

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3

Match the following pairs with their genetic classification.

• Purebred pair

• Ba

• Mixed alleles pair

• Aa

• Heterozygous pair

• Ab

• Mixed alleles pair

• BB

Tags

NGSS.HS-LS3-2

​ (a)   are the sections of DNA that control a specific trait; ​ (b)   are the possible variations of these sections of DNA.

• Genes
• Alleles
• DNA
• Chromosomes

Tags

NGSS.HS-LS3-1