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1. How are alleles related to the genotype? 2. How are alleles related to the phenotype? 3. How many base pairs code for an amino acid? 4. What are some exceptions to the dogma of molecular biology? 5. HIV is a reverse transcriptase. What does that mean? 6. Other than mRNA, what does DNA code for directly.

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Collen Von
Collen VonLv2
27 Jan 2019

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Related questions

What is DNA?

1. DNA is often referred to as a ladder. What pieces of the DNA molecule make up the rungs of the ladder (the steps)?

2. What pieces of the DNA molecule make up the sides of the ladder?

3. What types of bond occurs between the bases in the DNA molecule?

4. What makes up chromosomes? What is Gene?

5. How long does it take 1 cell to copy its genetic information? 6. How does the DNA copy itself so fast? What tricks does it use?

7. Describe how the bonds between base pairs work to hold the DNA strand together

DNA Replication

1. How many genes are in the human genome?

2. What are the differences between mRNA and DNA?

3. Where in the cell does transcription and translation occur? (give both places)

4. Which RNA piece reads the mRNA and how does it do this?

5. What is the start sequence? What amino acid does this code for?

6. What 3 codes tell ribosomal RNA to stop reading and release the protein?

DNA Extraction

1. List three differences between the virtual DNA extraction lab and the banana extraction lab you did last week.

Differentiate amongcomplete dominance, incomplete dominance andco-dominance.

3. Understand an allelicseries -How many possible alleles are there for any given gene? Isthere only one recessive allele for a gene? Is there only onedominant allele for a gene? Is an allele always recessive ordominant with respect to other alleles of the gene?

4. What is a lethalallele? Are lethal alleles usually dominant or recessive? Are thereany exceptions? (Hint: Huntington disease in humans). How do wemaintain stocks with lethal alleles?

5. How can you tell if anallele is lethal? If one of the parents has a lethal allele, wouldall the possible genotypes be present in the progeny? What wouldhappen to the phenotypic ratios of the progeny?

6. What ispleiotropy?

7. How can you tell if atrait is determined by more than one gene? What ratios ofphenotypes in the F2 generation would you expect if a trait isdetermined by a single gene?

8. What is epistasis? Howcan the genotype at a locus affect the phenotype determined by thegenotype at another locus? What are complementary gene action,duplicate gene action, dominant suppression, dominant epistasis,and recessive epistasis?

3. Complementary base pairing is an essential feature of DNA replication and transcription and translation. Explain how.

4. What’s the significance of the fact that operator and promoter overlap?

5. In which direction (3’?5’ or 5’?3’) does elongation of RNA occur?

6. In the genetic code, UUU and UUC both code for the same amino acid. What is this amino acid and what does this indicate about the genetic code?

7. Which part of a ribosome accepts a tRNA molecule that is attached to a growing polypeptide chain?

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