7th grade life science genetics and probability

Genetics Predicting the probable offspring of selected parents

Mendel’s Laws ,[object Object],[object Object]

Probability ,[object Object],[object Object]

Mendel’s Laws ,[object Object],[object Object],[object Object],[object Object],[object Object]

Mendel’s Experiments ,[object Object],[object Object],[object Object]

What is a Pure Bred Plant? Pure Bred Plants: consistently have offspring with the same trait as the parent.

Terms we need to further our discussion ,[object Object],[object Object],[object Object],[object Object]

More Terms ,[object Object],[object Object],[object Object],[object Object],[object Object]

Punnett square ,[object Object],[object Object]

How can we represent the alleles in a particular cross? ,[object Object],[object Object],[object Object],[object Object],[object Object],TT X tt

Showing a cross with Pea Plants ,[object Object],[object Object],t t T T

Pure tall X Pure short TT X tt Phenotype: All Tall Genotype: All Heterozygous (Tt) t t T T Tt Tt Tt Tt

Cross the F 1 generation ,[object Object],T t T t

The cross of 2 heterozygous parents Tt x Tt Genotype 1:2:1 ratio 1 homozygous dominant 2 heterozygous 1 homozygous recessive Phenotype 3:1 ratio 3 tall stemmed plants 1 short stemmed plant F 2 TT Tt Tt tt T t T t

Wait a minute! More terms ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

These are the classic Mendelian crosses! ,[object Object],[object Object],[object Object],[object Object]

See if you can figure these out! ,[object Object],[object Object]

7th grade life science genetics and probability

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7th grade life science genetics and probability