Sarah is doing an experiment on pea plants. She is studying the color of the pea plants. Sarah has noticed that many pea plants
have purple flowers and many have white flowers. Sarah crosses a homozygous white flower and a homozygous purple flower. The cross results in all purple flowers. What is true of the color of pea plants?
The color of the flowers Sarah is looking at is determined by alleles. These alleles can be dominant or recessive and this will directly influence the color of their descendants. If after the intersection between white and purple flowers all descendants are purple, it means that purple flowers have the dominant allele, while white flowers have the recessive allele.
Alleles can be dominant or recessive. We call the dominant allele one who alone can express a particular trait. The recessive allele can only express itself in pairs if its pair is also recessive.
the cylindrical bundle of nerve fibers and associated tissue which is enclosed in the spine and connects nearly all parts of the body to the brain, with which it forms the central nervous system.
Bohr's model of the atom states that electrons orbit an atom's nucleus in electron shells of increasing energy. ... Thomson's model, or the plum pudding model, it describes atoms as spheres of positively charged matter, in which electrons are embedded in
