Explain how gene expression is regulated | Homework Help

1). A cell is in the process of transcription. The single strand of DNA that is being copied has the sequence TAC GCA TTA CCC. Indicate the mRNA strand and then the tRNA strand that will be synthesized from this DNA strand listing the correct sequence of bases. What amino acids are translated? Describe why this step is important in the process of producing proteins. Explain how gene expression is regulated.

2). Explain how nondisjunction may be related to Down syndrome. Describe four syndromes that result from inheritance of an abnormal sex chromosome number.

3).What is biodiversity and why is this important to our survival?

4).Your friend knows that you took Human Biology and studied genetics. She asks you to explain a Punnett square to her. How do you explain how a Punnett square is read? Apply the following terms to your explanation: dominant, recessive, heterozygous & homozygous, one-trait & two-trait crosses, dihybrid cross and probability.