1 / 12

Understanding Heredity: Unveiling Genetic Codes and Traits

Explore how our DNA shapes our physical appearance and traits inherited from parents. Discover the science behind alleles, dominant vs. recessive traits, phenotypes, genotypes, and Mendel's work on pea plants.

tuwa
Download Presentation

Understanding Heredity: Unveiling Genetic Codes and Traits

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Why do we look the way we do? • Our DNA, our traits, what we get from our parents (heredity). • Our Genes = code for our traits, made up of a pair of alleles • Alleles are a pair of letters that represent a trait • EX: FF or Ff= Freckles, ff = no freckles WW or Ww = Widow’s Peak, ww = no widow’s peak

  2. Dominant vs. recessive alleles • Each parent has 2 alleles or (letters) for a trait. • CAPITAL LETTERS are called Dominant alleles. When these alleles are present, they take over or show. • lower case letters are recessive alleles, and they are present, but do not show physically.

  3. Examples of Dominant Alleles

  4. examples of recessive alleles

  5. Phenotype vs. Genotype Phenotype : The organism’s physical appearance, or visible traits. Genotype: The organism’s genetic makeup, allele combination.

  6. Mendel’s work… • P Generation = Parent Generation • F1 Offspring Generation = First Generation. • F2 Offspring Generation = Second Generation.

  7. Plants can also have Dominant and recessive alleles! Gregor Mendel’s work on pea plants. Traits he looked at: • Stem Height • Flower position • Seed shape • Seed color • Pod shape • Pod color

More Related