Genetics Checkpoint

The diagram shows the normal sequence of genes in a particular chromosome. Which chromosome could have resulted from a deletion that occurred in this chromosome?

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• 
• 
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Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

The diagram shows DNA fingerprints from a daughter horse, the mother horse, and four possible fathers. Which horse is most likely the father?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What ratio of the offspring from the cross shown will be homozygous recessive for the trait of tallness?

• 0 in 4

• 1 in 4

• 2 in 4

• 3 in 4

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Red flower color is dominant to white flower color in rose plants. What is the expected result of a cross between two heterozygous rose plants?

• 100% red

• 75% red, 25% white

• 50% red, 50% white

• 25% red, 75% white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

One parent is heterozygous for a certain trait (Dd). The other parent is homozygous dominant (DD) for that trait. What is the percent chance that an offspring from this cross will be heterozygous?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-3

 A chart of human chromosome pairs is called a karyotype. What information is revealed in the karyotype above? 

• The sex

• Trisomy

• Gene dominance

• The age

Tags

NGSS.HS-LS3-1

Albino individuals lack all pigmentation so that their hair and skin are white. This family tree shows that albinism - 

• is carried only by females in this family

• requires both parents to be albinos

• is a recessive genetic trait

• is a sex-linked gene

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

 In squash plants, yellow fruit (Y) is dominant to white fruit (y). If two plants heterozygous for yellow fruit are crossed, what are the possible genotypes of the offspring? 

• Yy, yy only

• YY, yy only

• YY, Yy, yy only

• Yy only

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Two plants are crossed, and the traits of height and color are assessed in the offspring. The following cross was conducted: TTPP x ttpp. Which of the following choices correctly describes the offspring? 

• All are tall and purple.

• Three-quarters of the plants are tall and purple.

• Three-quarters of the plants are short and white.

• All are short and white.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

After a culture of cells is allowed to multiply and is viewed through a microscope, the cells are x-rayed with high-energy radiation for less than 1/100th of a second. After the radiation, many newly reproduced cells appear different. What has probably occurred?

• Speciation

• Bacterial Infection

• Contamination

• Mutation

Tags

NGSS.HS-LS3-2