Science Pass

Which statement describes the ability of the children passing a recessive gene to their offspring?

• One child can pass the recessive gene to their offspring, and three children cannot.

• Two children can pass the recessive gene to their offspring, and two children cannot.

• Three children can pass the recessive gene to their offspring, and one child cannot.

• Four children can pass the recessive gene to their offspring, and zero children cannot.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Scientists are developing genetically modified plants that can grow in areas with little to no rain. These plants are genetically engineered by inserting a gene that helps the plant’s survive and grow in areas with less water than normal plants.

Which statement is a logical argument in favor of this research?

• It will help people to grow food crops in dry environments

• It will help to make soils richer.

• It will reduce the amount of herbicide needed to grow plants

• It will improve the efficiency of photosynthesis in all plant species.

Tags

NGSS.HS-ESS3-1

NGSS.HS-LS2-7

A student reads in a science magazine that a mutation in a body cell causes it to divide rapidly, forming large masses of cells. These masses of cells cause other body cells to divide uncontrollably. The student claims that the mutation is beneficial to the organism. Is the student’s claim correct?

• Yes. The rate at which wounds and injuries heal will increase.

• Yes. The rate of growth of the organism will increase.

• No. The uncontrollable division of body cells can lead to diseases such as cancer.

• No. The uncontrollable division of body cells has no effect on the organism.

Tags

NGSS.HS-LS1-4

NGSS.HS-LS3-2

In the fruit fly, the allele for black wings (B) is dominant over the allele for yellow wings (b). A cross between two black-wing flies produces a yellow-wing fly.

What are the correct genotype and phenotype of the offspring?

• Genotype: Bb

  Phenotype: Yellow Wings

• Genotype: Yellow Wings

  Phenotype: Bb

• Genotype: bb

  Phenotype: Yellow Wings

• Genotype: Yellow Wings

  Phenotype: bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In cats, the allele for erect ears is dominant over the allele for floppy ears. A parent cat has erect ears while one of its offspring has floppy ears. Which statement could be true?

• The offspring has the dominant trait, and its genotype is ee.

• The offspring has the recessive trait, and its genotype is Ee.

• The parent pig has the recessive trait, and its genotype is ee.

• The parent pig has the dominant trait, and its genotype is Ee.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a rare plant, the trait for bent stems (B) is dominant over the trait for straigth stems (b). Which cross will result in maximum offspring with the bent stem trait?

• bb x bb

• BB x bb

• Bb x Bb

• bb x Bb

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In strawberry plants, the trait for red fruit (R) is dominant over the trait for pink fruit (r). The table shows five possible crosses.

Which crosses represent possible parents of a strawberry plant that has the pink fruit phenotype?

• 2 and 5

• 3 and 4

• 1, 2, and 3

• 3, 4, and 5

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In Tulips, the allele for purple flowers (P) is dominant over the allele for white flowers (p). What percentage of the offspring is expected to be purebred from the cross of Pp x Pp?

• 100%

• 75%

• 50%

• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the benefit of this research?

• It will help in identifying new coal deposits.

• It will increase dependence on coal mining.

• It will make the extraction of coal less safe.

• It will help in developing a new way to mine coal.

Tags

NGSS.HS-ESS3-2

NGSS.HS-ETS1-3

A team of biotech engineers has developed a method for converting common corn and sugar cane into bio-ethanol (a biofuel). The engineers are now researching how to make this fuel more energy efficient.

Which statement best justifies why the research should continue?

• The research will limit the production of corn and sugar cane

• The existing fuel engines will become more efficient from the research.

• The research makes the corn and sugar cane more useful.

• The fuel obtained from the research is a renewable source of energy.

Tags

NGSS.HS-ESS3-4

NGSS.HS-ETS1-2

NGSS.HS-PS3-3