biology
Storyboard Text
- Are genes inherited together? That's the question Gregor Mendel asked himself whenever he began to conduct his second experiment.
- In his first experiment, Mendel discovered that some traits are dominant, meaning that they appear even if a recessive trait is present (recessive meaning that they are still present in the genes, but do not show up).
- He did this by crossing alleles, which are different forms of a gene. He takes homozygous plants, which contain identical alleles. he created heterozygous plants, which contain different alleles.
- When Mendel conducted his second experiment, he did a dihybrid cross, which is crossing (breeding) two characters at the same time.
- Mendel created the "Law of Independent Assortment." What does this mean? Well, the law states that certain factors that control different traits, such as eye color and height, are inherited separately from one another.
- we see in a creature's genotype, or chemical composition, that they have green eyes, it cannot be automatically stated that they have brown hair. Only one factor controls a particular phenotype, or physical apperance, of a creature.
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