It is synthesized by DNA with a process named transcription
These all are worded wrong... (Humans have 23 normal chromosomes that are in pairs of 2 so thats where 46 comes from)
The rock did not become an igneous rock because igneous rock can not be formed from sedimentary rock. A metamorphic rock can be formed from a sedimentary or igneous rock but an igneous rock can not be formed from a sedimentary or metamorphic rock. Igneous rocks are formed by the cooling and hardening of molten magma only.<span />
<span>A good answer is ‘BRCA1 and BRCA2 genes’. These two genes were discovered by Marie-Clare King in the 1970s and offered a major contribution to our understanding of cancer, particularly breast cancer, which was thought to be caused by viruses at the time.</span>