Twins In Space

Choose the correct definition of: identical

• energy that travels in the form of waves outward from a source, such as the sun

• the substance in cells that determines the characteristics of a living thing

• appearing to be exactly the same

• parts of DNA in cells that contain the genes

Choose the correct definition of: radiation

• energy that travels in the form of waves outward from a source, such as the sun

• the substance in cells that determines the characteristics of a living thing

• appearing to be exactly the same

• parts of DNA in cells that contain the genes

Choose the correct definition of: duplicate

• energy that travels in the form of waves outward from a source, such as the sun

• the substance in cells that determines the characteristics of a living thing

• exactly the same as another

• parts of DNA in cells that contain the genes

Choose the correct definition of: comparison

• energy that travels in the form of waves outward from a source, such as the sun

• examination of things to see how they are similar

• exactly the same as another

• parts of DNA in cells that contain the genes

Choose the correct definition of: DNA

• energy that travels in the form of waves outward from a source, such as the sun

• the substance in cells that determines the characteristics of living thing

• exactly the same as another

• parts of DNA in cells that contain the genes

Choose the correct definition of: Chromosomes

• energy that travels in the form of waves outward from a source, such as the sun

• the substance in cells that determines the characteristics of living thing

• exactly the same as another

• parts of DNA in cells that contain the genes

Why couldn't Mark share his breakfast with his brother? (paragraph 2)

• He wanted to eat it all himself.
• His brother was in space.

• He was saving it for later.
• He had no extra food to share.

Scott and Mark are ____________ twins? (paragraph 8)

Who is Susan Bailey? (paragraph 9)

• A dentist

• A doctor

• A teacher

• A scientist

To help Bailey study the twins (Mark and Scott) she gave them test at different times? (paragraph 10)

• true

• false