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31 Cards in this Set
- Front
- Back
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Probability |
A number that describes how likely it is that an event will occur - used by Mendell |
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Punnett square |
A chart that shows all the possible ways alleles can combine |
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Heredity |
Is the passing of physical characteristics from parents to offspring |
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Trait |
physical characteristics that are studied |
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Genetics |
The scientific study of heredity |
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Fertilization |
The process in which egg and sperm cell join |
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Purebred |
The offspring of many generations that have the same form of a trait |
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Gene |
The factors that control a trait |
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Allele |
The different form of a gene |
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Dominant allele |
Is one whose trait always shows when its present - if this trait and a recessive trait are together this will show |
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Recessive allele |
Hidden whenever the dominant allele is present |
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Hybrid |
Has two different alleles for a trait |
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Phenotype |
The physical appearence |
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Genotype |
The allele combination or genetic makeup (letters ex Tt, TT, tt) |
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Homozygous |
An organism that has two identical alleles for a trait |
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Heterozygous |
An organism that has different alles for a trait (see hybrid) |
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Cross-pollinated plants. |
How did Gregor Mendel study different characteristics? |
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Purebred, Homozygous, Dominate Genotype, also 2 dominate alleles |
What does TT mean? |
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Purebred, Homozygous, recessive Genotype, also 2 recessive alleles |
What does tt mean? |
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Hybrid, Heterozygous, Dominate Genotype |
Examples of what Tt means |
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Punnett square |
What shows all the possible outcomes of a genetic cross |
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TT x Tt (T=tall, t=short) - What is the probability of a tall and short child? - Make sure to do a punnett square to find the answer |
100% Tall, 0% short |
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Tt x tt (T=tall, t=short) - What is the probability of a tall and short child? - Make sure to do a punnett square to find the answer |
50% Tall, 50% Short |
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TT x tt (T=tall, t=short) - What is the probability of a tall and short child? - Make sure to do a punnett square to find the answer |
100% Tall, 0% short |
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2 hybrid genotrypes (T=tall, t=short) - What is the probability of a tall and short child? - Make sure to do a punnett square to find the answer |
75% Tall, 25% short |
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When Mendel crossed purebred short plants with purebred tall plants, all of the offspring were? |
Tall |
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The offspring of parents that have different purebred alleles for a trait. |
Hybrid |
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75% |
What is the chance the flower will be dominate? |
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50% |
What is the chance the flower will be dominate? |
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Both TT, Tt are dominate or recessive? |
dominate |
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tt is dominate or recessive? |
recessive |
