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Mendel's Genetics

7th Grade Chapter 5

QuestionAnswer
How did Mendel study pea plants? By cross breeding 2 different pea plants.
How many trait s did Mendel study at one time? 1 trait at a time.
Where and when did Mendel live? Brno and 1822-1884.
What is the difference between how Gregor Mendel did his reasearch compared to other scientists? He used the scientific method.
How did Mendel use his probability in his research? Mathamatics
Define inheritance The passing of traits from parents to offspring.
Define Genes segment of DNA on a chromosome or a chromatid that controls a particular trait.
How do genes appear on homologus chromosomes and why? genes appear on a chromosome in pairs because they need to go through the stages of mitosis.
Define allele an alternate expression of a gene expressed by large and small letters.
How is an allele expressed? LARGE and small letters
how many alleles are there for each genotype? Why? 2 alleles, 1 for dominint and 1 for recessice
Define genotype The actual genetic makup of the organism.
Define phenotype Physical description of trait based on genotype
What is the principle of dominant and recessive? You have both dominint and recessive but you can only see dominant.
How are dominant and recessive traits shown in a genotype? How ypu express yourself.
What is the difference between parental and filial group? parental=wrinkled seeds filial=rounded
Define Punnett Square Used to predict the resultsof a cross without actually crossing the traits.
What do punnett squares represent? 100% probability
define the difference between homozygous dominant, homozygous rececive and heterozygous.(give examples of each) homozygous dominant LARGE letter, LARGE letter(BB) homozygous recessive small letter, small letter (bb) heterozygous LARGE letter, small letter
Created by: 21hbucklin
 

 



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