Gametophytes produce cells that undergo mitosis to produce gametes that fuse to form a zygote.
Sam (father) DD homozygous dominant
Sally (mother) dd homozygous recessive
<h2><em>Susan (child) Dd heterozygous </em></h2>
:3
Answer:
Explanation:
In 1869, Friedrich Miescher isolated "nuclein," DNA with associated proteins, from cell nuclei. He was the first to identify DNA as a distinct molecule. Phoebus Levene was an organic chemist in the early 1900's. He is perhaps best known for his incorrect tetranucleotide hypothesis of DNA.
