Gregor Mendels Work Considered the father of genetics Used garden pea plants

Gregor mendels work considered the father of genetics

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Gregor Mendel’s Work Considered the father of genetics Used garden pea plants for study Was Austrian monk who initially wanted to be a teacher but failed his teaching certificate Chose to study pea plants because: research showed that pea plants hybrids can produce, many pea varieties were available, peas are small plants and easy to grow, peas can self-fertilize or be cross fertilized. Experiment method produces true breeding strains for each trait he was studying (allowed plants to self-fertilize for several generations to produce true plant), cross fertilize true breeding strains having alternate forms of a trait, perform reciprocal crosses as well, allow the hybrid offspring to self-fertilize and count the number of offspring showing each form of the trait. To not allow self-fertilization Mendel cut the anthers that produce pollen off of the plants. Monohybrid crosses A cross to study only 2 variations of a single trait Produced true breeding pea strains for 7 different traits Each trait had 2 alternated forms (variations) Mendel cross fertilized the 2 true breeding strains for each trait F1 generation (1 st filial generation): offspring produced by crossing 2 true breeding strains For every trait Mendel studied, all F1 plants resembled only 1 parent No plants with characteristics intermediate between the 2 parents were produced. Mendel’s 7 traits included; flower color, seed color, seed texture, pod color, pod shape, flower position, and plant height. F1 generations off spring resulting from a cross of true breeding parents F2 generations offspring resulting from the self-fertilization of F1 plants F2 considered grandchildren to F1 F2 generation occurs from self-fertilization of hybrid plants produced from F1 generation or could let 2 hybrid plants breed which yielded same results. Dominant the form of each trait expressed in the F1 plants (purple) Recessive the form of the trait not seen in the F1 plants (white) F2 plants exhibited both forms of the trait in a very specific pattern: ¾ plants with the dominant form, ¼ plants with the recessive form The dominant to recessive ratio: 3:1 Mendel discovered the ration actually: 1 true breeding dominant, 2 not true breeding dominant plants, 1 true breeding recessive plant Gene- information for a trait passed to offspring from parent Alleles- alternated forms of the gene Homozygous- having 2 of the same allele Heterozygous- having 2 different alleles
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Genotype- total set of alleles of an individual; what cannot be seem Mendel’s Work- PP= homozygous dominant (has 2 dominant traits), Pp= heterozygous (dominant trait and recessive trait), pp= homozygous recessive (recessive white flower color Phenotype- outward appearance of an individual such as color, height; what you can see (some phenotypes cannot be seen). Law of Heredity/ Principle of Segregation - 2 alleles for a gene segregate during gamete formation and are rejoined at random, one from each parent, during fertilization. Pungent square -developed by Reginald C. Pungent for configuring the incidence
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