Genetics Unit

Which of the following is NOT influenced by the environment?

• skin cancer

• eye color

• lung cancer

• obesity

Which of these choices plays a huge role and can have an effect on your existing genetic factors?

• your diet

• what you wore today

• doing science homework

• your hair color

Which of these traits is purely a genetic trait?

• athleticism

• blood type

• whistling ability

• height

The definition of an environmental trait is:

• a trait that is only available on Earth Day

• a trait that is passed down by an organism’s biological parents, through DNA

• a trait that is developed when you are in a forest, or jungle

• a trait that is developed by an organism’s surroundings

Which best explains why sexual reproduction produces greater variations in the offspring?

• The DNA comes from two genetically different parents.

• The DNA comes from one parent that is genetically identical.

• The sex cells are produced by mitosis.

• The sex cells undergo self-fertilization

Single celled organisms can reproduce and create cells exactly like themselves without combining genes from two different parent cells. When they do this, they use a type of

• asexual reproduction

• gamete formation

• natural selection

• sexual reproduction

Many plants reproduce asexually. How does the genetic material (DNA) compare between the new plant and the parent plant in this type of reproduction?

• It is similar but not identical

• It depends on the plant the parent was crossed with

• It depends on the climate it is grown in

• It is identical

Reproduction by 2 parents that produce genetically DIFFERENT offspring is called

• Sexual reproduction

• Asexual reproduction

• Fertilization

• Spontaneous generation

Which of the following statements is part of the cell theory?

• Only plants are made of cells

• All cells come from other cells

• Cells can be produced from nonliving matter

• Only animals are made of cells

According to the cell theory what is the basic structure and function of all life?

• nucleus

• mitochondria

• organelles

• cells