The genetic code defines how codons, sequences of nucleotide triplets, specify which amino acid will be added next during process of translation (protein synthesis).
The genetic code is universal among organisms. That means that the same codons code for the same amino acids in different organisms.
It is known which amino acids are coded by which codons. If we know sequences of amino acids, we then also know sequences of nucleotides in DNA/RNA. If we know DNA/RNA sequences we can then reveal relationships among different organism by compering similarities in those sequences.
The male sperm determines whether it is a girl or a boy, if it has XX chromosomes it is a girl if it has XY chromosomes it is a boy. Males can only receive Y chromosomes from their fathers.
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A quasar is formed when a super massive black hole has enough material around it to fall in it's accretion disk.
Answer:
It should be macromolecule :)
Explanation:
Each tissue is an organized assembly of cells held together by cell-cell (more...) In epithelial tissue, by contrast, cells are tightly bound together into sheets called epithelia. The extracellular matrix is scanty, consisting mainly of a thin mat called the basal lamina, which underlies the epithelium.
