BIO Assignment Lindsay Scott 

BIO Assignment Lindsay Scott

1. An organism has a haploid number of 4. At the end of meiosis prophase, I how many chromatids will be visible? Explain (2 points)

2. The end products of both mitosis and meiosis is a set of chromosomes. Explain the differences between the two sets. (2 points)
3. Suppose that Mendel had decided to use humans for his experiments. What problems would he have had that he did not have with the garden pea? (4 points)

4. Explain in your own words how mRNA and tRNA are used in protein synthesis. (4 points)

5. The F2 generation of a cross between a parental tall and a parental short pea plant is 298 tall plants and 102 short plants. What do these results say about the genes for stem height in the pea plant? (2 points)

6. Outline three differences between RNA and DNA. (3 points)
1. The first difference between Ribonucleic acid and Deoxyribonucleic acid is how many strands each nucleic acid has. RNA is said to usually be single-stranded, while DNA has a double stranded helix.

2. The second difference between RNA and DNA is regarding the sugar. RNA uses ribose sugar, while DNA uses deoxyribose sugar.

3. The third and final difference between RNA and DNA is that DNA uses thymine as a nucleobase and RNA uses Uracil in place of thymine.

7. Using the B and N genes which control coat colour and blindness in Labrador retrievers, show a punnett square to explain the 9:3:3:1 phenotypic result shown in figure 9.5B on page 163 of the text.

BIO Assignment Lindsay Scott

 

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