Section 8-1 Vocabulary Worksheet
Name: _____________________________________________________ Period: ___
Section 8-1 Vocabulary Worksheet
|TERM |DEFINITION |
|Chromosome | |
| | |
|Histone | |
| | |
|Chromatid | |
| | |
|Centromere | |
| | |
|Sex chromosome | |
| | |
|Autosome | |
| | |
|Homologous chromosome | |
| | |
|Karyotype | |
| | |
|Diploid | |
| | |
|Haploid | |
| | |
Copy the definition below into the space above for the correct word:
• Cells – such as normal body cells – that have 2 copies of each chromosome
• A picture showing all of the chromosomes in an individual’s cells.
• The middle part of a chromosome that holds two chromatids together.
• Proteins that help DNA coil up into chromosomes.
• Cells – such as sperm and egg cells – that have only 1 copy of each chromosome.
• Chromosomes that determine the gender of an organism.
• Two identical copies (aka “sisters”) of these make up 1 single chromosome.
• This is the form DNA takes during cell division.
• These chromosomes carry genes, but do not affect an organism’s gender.
• Two chromosomes that are the exact same size and have genes for the same characteristics.
In each pair below, one cell type is haploid, and one is diploid. Write H above the haploids, and D above the diploids.
1. Sperm Skin
2. Brain Egg
3. XX X
4. AaBbCc ABC
5. Draw a pair of homologous chromosomes below. Label the two sets of sister chromatids and the centromeres.
6. How many chromosomes does a typical female human have?
7. How many pairs of homologous chromosomes?
8. How many autosomes?
9. How many sex chromosomes?
10. What type of molecule is a histone? What building blocks is it made of?
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