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CPO FITB Notes-Probability CPO p

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Presentation on theme: "CPO FITB Notes-Probability CPO p"— Presentation transcript:

1 CPO FITB Notes-Probability CPO p.189-193
Predicting Heredity

2 11.2 Heredity Genes and Alleles
Gregor Mendel did not know about genes, _______________________, DNA, or meiosis. In 1903, American scientist Walter Sutton (1877 to 1916) examined the ________________ of the cell of a grasshopper under a microscope. Sutton observed cell parts separating during __________________ ___________________ Soon chromosomes were discovered to contain __________________.

3 Individual units called _______ determine an organism’s traits.
A gene is a segment of DNA located on a ____________ that carries hereditary instructions from parent to offspring. For each gene, an organism typically receives one ___________ from each parent. If an organism inherits different alleles for a trait, one allele may be ___________ over the other. The alleles of a gene separate from each other when ________ ___________are formed during meiosis.

4 11.2 Alleles and meiosis Homologous pairs of _______________________ separate during meiosis. Since alleles of a gene are found in matching locations on homologous pairs of ______________________, they also separate during meiosis.

5

6 11.2 Predicting Genotypes and Phenotypes
You can ___________ the possible genotypes and phenotypes of offspring if you know the genotypes of the parents. A Punnett square shows all of the possible combinations of alleles from the _______________.

7

8 11.2 Punnett squares and probability
________________ is the mathematical chance that an event will occur. Probability can be expressed as a _______________ or a percentage.


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