Genes and Alleles - Mastery Ticket

What is an allele?

• The trait expressed by an organism.
• The combination of genetic information from your parents.
• A unit of genetic information that you receive from your parents.
• A trait that is never expressed.

Two useful terms that geneticists use are?

• Phenotype and Kenotype
• Kenotype and Genotype
• Genotype and Phenotype
• Domininant and Kenotype

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An organism that has two identical alleles for a trait is said to be what?

• Hybrid
• Co-dominant
• Homozygous
• Heterozygous

How much of your DNA do you inherit from your mom?

• 10%
• 25%
• 50%
• it varies

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An organism that has two different alleles for a trait is?

• Alleles 
• Co-Dominant
• Homozygous
• Heterozygous

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The traits of an organism are passed to its offspring on small coded strands of DNA material called

• meiosis
• recessive traits
• genes
• heredity

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An organism's physical appearance or visible traits is called:

• genotype
• inherit
• gene
• phenotype

What type of gene can hide the effects of a recessive gene?

• inherited trait
• learned trait
• dominant gene
• recessive gene

Which gene is heterozygous?

• TT
• Tt
• rr
• YY

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NGSS.HS-LS3-1

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How many alleles (letters) do each person carry for a trait?

• 1
• 2
• 3
• 4