Environment and Genetics

What is DNA? (Check the correct boxes)

• Deoxyribo Nucleic Acid

• Offspring

• located in the nucleus

• determines the genetic traits of an organism

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What is a segment of DNA found on a chromosome; determines the inheritance of a particular trait?

• Gene

• Allele

• Heredity

• DNA

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What is a chromosome?

• made of DNA

• located in the nucleus

• contains genetic information needed to carry out cell functions and make new cells

• Created by a scientist

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A ___________ is behavioral characteristics or physical attributes of an organism that are expressed by genes and/or influenced by the environment.

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A _________ trait masks the other trait; it is the trait that shows if present.

Choose the correct match.

• A genotype is the genetic makeup of an organism or

  the set of genes an organism carries in its cells. A phenotype is the physical characteristics of an organism.

• A phenotype is the genetic makeup of an organism or

  the set of genes an organism carries in its cells. A genotype is the physical characteristics of an organism.

What is a trait that will only exhibit when the dominant allele is not present.

• DNA

• Dominant

• Recessive

What is the relationship between DNA and chromosomes

• Chromosomes are made out of DNA

• DNA is made out of chromosomes

• DNA and chromosomes are the same thing

• DNA forces chromosomes to mutate

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How many pairs of chromosomes exist in each of your cells?

• 10

• 12

• 19

• 23

Why are your chromosomes arranged in pairs?

• Scientists aren't sure

• Because you get one from your mother, and one from your father

• Because pairs are able to divide more easily

• Because DNA has a double helix structure

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