7.14(A): BrainPOP Genetics

Inherited traits are:

• dependent on diet

• acquired during an organism's life

• free of mutations

• passed on from parent to offspring

Tags

NGSS.MS-LS3-2

The average size of a grocery store chicken has more than doubled in the past century (100 years). What is the most likely reason for this change?

• Natural selection resulted in a larger species of chicken

• Artificial selection created a larger breed of chicken

• Mutations occur less frequently in chickens than they did a century ago

• Grocery stores used to sell younger chickens

Tags

NGSS.MS-LS4-5

NGSS.MS-LS1-5

Gregor Mendel observed that pea plant traits did not blend in their offspring. This led him to conclude that:

• traits are inherited in separate units

• offspring inherit genes from only one parent

• pea plants do not have genes

• traits are not inherited

Every cell in an organism has the same number of chromosomes, except:

• skin cells

• neurons

• white blood cells

• reproductive cells

Tags

NGSS.HS-LS3-2

A gene carries the __________ for a trait.

• equipment

• instructions

• materials

• protection

The building blocks of DNA are like alphabet letters, because they:

• are each associated with a particular sound

• can be used in a variety of languages

• each have an uppercase and a lowercase form

• spell out different instructions depending on their order

Genes influence an organism's traits by coding for:

• cells

• proteins

• chromosomes

• DNA

Tags

NGSS.MS-LS3-1

Genetic mutations are ________ harmful.

• always

• usually

• sometimes

• never

Tags

NGSS.MS-LS3-1

How do mutations affect natural selection?

• They slow down the process

• They prevent organisms from evolving

• They affect how likely an organism is to survive and reproduce

• They are the leading cause of extinction

Tags

NGSS.MS-LS3-1

NGSS.MS-LS4-4

How is editing the genetic code different from artificial selection?

• It enables humans to influence the inheritance of DNA

• It enables humans to directly change DNA

• It can only be used on animal DNA

• It is not yet possible to edit the genetic code

Tags

NGSS.MS-LS4-5