Intro to Genetics

Which is heterozygous ?

• Tt

• TT

• ZZ

• E

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NGSS.HS-LS3-1

Which is homozygous ?

• Zz
• SS

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NGSS.HS-LS3-1

The genetic makeup of an organism is its ___.

• heterozygous

• punnet square

• genotype

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NGSS.HS-LS3-1

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

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NGSS.MS-LS4-4

What is a phenotype?

• The genetic make up (code)

• The physical trait

An allele whose trait only shows up when no dominant allele is present.

• hidden allele
• dominant allele
• recessive allele
• present allele

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

• 10
• 12
• 23
• 46

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Why are your chromosomes arranged in pairs?

• Scientists have no idea
• Because you get one from your mom and one from your dad
• Because pairs can divide easier
• Because DNA is awesome

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NGSS.HS-LS3-1

What does heterozygous mean?

• An organism that has the same genes for a trait (TT or tt)
• An organism that has different genes for a trait (Tt)
• When neither gene is fully dominant; offspring is a mixture of both
• the different forms of a trait (hair color--> brown, blonde, red

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the definition of genotype?

• The physical expression of a trait
• The genetic combination of alleles 
• the genes on a DNA strand

Tags

NGSS.HS-LS3-1