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| Genes are located on structures called ________________. |
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| _______________ is known as the father of genetics. |
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| The process in which a parent cell divides twice to produce sex cells is called ______________. |
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| Different forms of a gene are called |
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| An organism that has two identical alleles for a trait is |
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| If you were a geneticist and you saw the notation “Tt,” what would it mean? |
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| one dominant / one recessive allele. |
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| If you were a geneticist and you saw the notation “Tt,” what would it mean? |
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| one dominant / one recessive allele. |
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| If you were a geneticist and you saw the notation “Tt,” what would it mean? |
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| one dominant / one recessive allele. |
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| In genetics, physical appearance is called |
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| any change in an organism's DNA |
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| A homozygous black guinea pig (BB) is crossed with a homozygous white guinea pig (bb). What is the probability of their offspring having black fur? *Make a Punnett square to check your work. |
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| The offspring would be Bb, Bb, Bb, Bb; therefore, they would all be black (100%). |
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| When sex cells combine, they each contribute |
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| ½ the normal number of chromosomes. |
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| Genotype refers to an organism’s |
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| The # of chromosomes is reduced by ½ to form sex cells. |
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| An organism that has two different alleles for a trait is called |
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| What does the notation TT mean to geneticists? |
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| Factors that control traits are called |
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| If you were a geneticist and you saw the notation “tt,” it would mean |
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| all the possible outcomes of a genetic cross. |
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| A heterozygous organism has |
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| two different alleles for a trait. |
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| the likelihood that a particular event will occur. |
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| Physical characteristics that are studied in genetics are also called |
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W=white, w=purple
If Ww and ww cross, what percent will have purple flowers? (Check with Punnett Square) |
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| The offspring would be Ww, Ww, ww, ww;therefore, there would be a 50% chance the offspring would be purple. |
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| When W=white and w=purple, which is the dominant allele? |
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| Know and Practice with Punnett Squares. |
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| Know and practice with Punnett Squares. |
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| an organism's physical appearance |
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| If a _____________ allele is present, its trait will appear in the organism |
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