Biology

4. he discovered the nucleotide
6. adds a short segment of RNA
8. Genes do not produce normal amounts of the pigment melanin
9. apyramidine that you would find it in ribonucleic acid
10. organelle responsible for protein synthesis
13. Absence of the gene that codes for the enzyme that breaks down galactose
14. He studied two sample ( strain ) of the bacteria streptococcus pneumonia
16. it causes changing the reading frame of genetic code
17. The coding sequences on mRNA
18. composed of two nitrogen ring
19. is characterized by delayed clotting of the blood resulting an excessive bleeding

1. links the disconnected strand together
2. Three nucleotides codes for one amino acid
3. They have floating circular DNA
4. An individual who is heterozygous for a recessive disorder
5. a diagram that traces the inheritance of a particular trait through several generations.
7. The percentage of twins who both express a given trait
11. Many phenotypic traits, however, arise from the interaction of multiple pairs of genes
12. is responsible for unwinding and separating of the two strands
15. the covalent bond between the amino acid