Heredity and Genes

Which of the following do your genes affect?

• your ability to play soccer

• how your body grows and looks

• your ability to ride a bike

• the function of your circulatory system

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Your sister is very good at playing the piano. What is her piano playing ability an example of?

• a learned behavior

• an inherited trait

• a dominant trait

• a recessive trait

What are recessive genes?

• strong genes that are in control

• genes that help you learn new things

• genes that you only get from your father

• weaker genes that hide when a dominant gene is present

Which of the following is an inherited trait?

• using a computer

• freckles

• playing video games

• reading books

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The gene for brown eyes is dominant. What is needed in order for a person to have brown eyes?

• no genes for brown eyes

• two green eye genes

• at least one brown eye gene

• three brown eye genes

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What is learned behavior?

• something you are taught or learn through experience

• a feature you are born with

• traits and physical features that your parents pass on to you

• tiny sets of instructions inside every cell of your body

What are all the genes passed on to an offspring called?

• dominant traits

• recessive traits

• genotype

• phenotype

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Where are the chromosomes of an organism located?

• on the genes

• on the alleles

• in the nuclei of cells

• in the DNA molecule

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What are two forms of the same gene called?

• phenotypes

• genotypes

• dominant traits

• alleles

In humans, having dimples is a dominant trait. You meet a woman who does not have dimples. What can you conclude about this person?

• She has inherited two recessive alleles for the dimples trait

• She has inherited two dominant alleles for the dimples trait

• She has inherited one recessive allele for the dimples trait

• She has inherited one dominant allele for the dimples trait

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