7.14(A): BrainPOP Genetics

dependent on diet

acquired during an organism's life

free of mutations

passed on from parent to offspring

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

traits are inherited in separate units

offspring inherit genes from only one parent

pea plants do not have genes

traits are not inherited

skin cells

neurons

white blood cells

reproductive cells

equipment

instructions

materials

protection

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

cells

proteins

chromosomes

DNA

always

usually

sometimes

never

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

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