A-Level AQA Biology DNA, Genes & Chromosomes: Complete Table 2 to show three d

Question

Complete Table 2 to show three differences between DNA in the nucleus of a plant cell and DNA in a prokaryotic cell.

Table 2

| DNA in the nucleus of a plant cell | DNA in a prokaryotic cell |
|-----------------------------------|----------------------------|
| 1                                 |                            |
| 2                                 |                            |
| 3                                 |                            |

Scientists investigated the genetic diversity between several species of sweet potato. They studied non-coding multiple repeats of base sequences.
Define 'non-coding base sequences' and describe where the non-coding multiple repeats are positioned in the genome.

[2 marks]

The percentage similarities in the non-coding multiple repeats of base sequences of four species of sweet potato are shown in Table 3.

Table 3

| Species of sweet potato | Percentage similarity between non-coding multiple repeat base sequences |
|------------------------|----------------------------------------------------------|
| C                      | 53.5  |  53.5  |  25.7  |  59.7  |
| L                      | 53.5  |  33.4  |  53.7  |
| R                      | 25.7  |  33.4  |  36.6  |
| T                      | 59.7  |  53.7  |  36.6  |

Use the information in Table 3 to complete the phylogenetic tree shown in Figure 8.
Write the letter that represents the correct species into each box.

Figure 8

Key

- Common ancestor of the species to the right
- Historical time, years before present

Complete Table 2 to show three differences between DNA in the nucleus of a plant cell and DNA in a prokaryotic cell - AQA - A-Level Biology - Question 8 - 2020 - Paper 1

Worked Solution & Example Answer:Complete Table 2 to show three differences between DNA in the nucleus of a plant cell and DNA in a prokaryotic cell - AQA - A-Level Biology - Question 8 - 2020 - Paper 1

DNA in the nucleus of a plant cell vs DNA in a prokaryotic cell - 1

DNA in the nucleus of a plant cell vs DNA in a prokaryotic cell - 2

DNA in the nucleus of a plant cell vs DNA in a prokaryotic cell - 3

Define 'non-coding base sequences' and describe where the non-coding multiple repeats are positioned in the genome.

Use the information in Table 3 to complete the phylogenetic tree shown in Figure 8.

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