BM 3 Skills check

Bobcats can also develop albino pigmentation. This mutation will give bobcats white fur. The picture shows an albino bobcat in its natural environment.   Which statement BEST describes the albino mutation in the bobcat?

• It is a neutral mutation because it will decrease the bobcat's survival.

•  

   

  It is a neutral mutation because it does not affect the bobcat's survival.

• It is a harmful mutation because it will decrease the bobcat's ability to find prey.

• It is a beneficial mutation because it will increase the bobcat's ability to find prey.

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

Which kind of mutation is represented by the change in Recipe 1?

• a mutation where one ingredient was repeated

• a mutation where an additional ingredient was added

• a mutation where one ingredient was substituted for another

• A.             a mutation where an ingredient was removed and not replaced

The first farmer uses a selective breeding method. He selects only the cows with the highest milk yields and allows them to breed with his bull. The diagram shows his cattle population over many generations. Cows with high milk yields are outlined in red. Which BEST describes the method used by the first farmer?

• It is a form of natural selection where surviving offspring receive the best parental traits.

   

• It is a form of natural selection where organisms select mates with beneficial traits.

• It is a form of artificial selection designed to produce offspring with desired traits

• It is a form of artificial selection where organisms can select and change their traits.

   

Peppered moths are usually white with black specks that look like pepper. Sometimes, these moths are born with almost entirely black wings. During the Industrial Revolution, factories used coal in their production, leading to increased air pollution. As a result, trees near these cities often had darkened trunks and fewer lichens.

In 1963, Congress introduced the Clean Air Act. The purpose of this act was to reduce air pollution and improve air quality, the air became cleaner, tree trunks became lighter, and lichen growth increased again.

Which statement provides the BEST explanation for the trend seen in the data?

 

• Traits are equally advantageous for individuals in any environment.

• Genetic variation prevents organisms from reaching reproductive age.

• Natural selection favors the organisms that are least suited to an environment.

• Traits that are advantageous in an environment will increase with each generation.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

The average number of brown beetles and green beetles changes in a local population. During times of drought, the population of brown beetles flourishes, while the green beetle population increases during the rainy season. This is an example of natural selection.

Which of the following BEST describes what would happen to the populations of brown and green beetles over a period of two years with increased monthly rainfall?

 

• The green beetle population and the brown beetle population would be roughly equal in number.

• The green beetle population would increase, and the brown beetle population would become extinct.

• The green beetle population would increase, and the brown beetle population would decrease.

   

• The green beetle population would decrease, and the brown beetle population would increase.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Young robins build the same kinds of nests their parents build even if the young birds have never seen their parents build a nest. This is an example of

• a learned behavior

   

   

• an inherited behavior.

• physical characteristic.

• acquired characteristic.

Peacocks perform an elaborate dance while displaying their tail feathers. What purpose does this action MOST likely serve for the peacock?

•  

  It enables them to attract a mate. 

   

• It enables them to defend a mate.

• It allows them to more easily lose their feathers.

• It distracts other animals so the peacock can escape.

Tags

NGSS.MS-LS1-4

Dalmatian dogs sometimes become deaf due to a recessive trait they may inherit. For this reason, some Dalmatian owners will not let their dogs have puppies if they are deaf. Allowing only Dalmatians that can hear to produce offspring is an example of

 

• selective breeding

   

•            sexual reproduction.

•  crossbreeding.

• asexual reproduction

Tags

NGSS.MS-LS4-4

Based on the picture and chart below, which characteristics are these three types of poodles specifically bred for?

• size

• color

• coat length

• retrieving ability

A mutation that occurs in an organism that reproduces sexually will MOST likely affect the traits of the offspring if the mutation

• is located in the cells of the nervous system.

   

• alters DNA in a gamete of the parent.

•   alters the behavior of the organisms.

•   is located near the locus of a chromosome.

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4