Complete the sentence using the correct words from the box.
A chromosome is a threadlike structure found in the nucleus of a _____________ cell. In a __________ human body cell, there are ______ pairs of chromosomes. The ___________ of an organism is determined by the combination of _______ (different versions of genes) that are inherited from each parent.
DNA | 46 | Allele | Phenotype | Gene |
Eukaryotic | Haploid | Diploid | Prokaryotic | 23 |
A diploid nucleus from the body cell of a dog contains 78 chromosomes.
How many chromosomes would be found in the nucleus of a dog's gamete?
Figure 1 shows a cell preparing for mitosis.
Which of the following statements indicates that the cell in Figure 1 is preparing to divide?
The nucleus has visible pores
The nucleus is visible and 'X' shaped
The chromosomes are visible
There is a haploid number of chromosomes
Identify the three stages of the cell cycle.
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