Reinforcement: Chromosomes (KEY)
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1. Cells that have the complete set of chromosomes are called ____​diploid​_______
2. Cells that have only half of that number are called _____​haploid​__________.
3. Process of cell division that results in 4 haploid cells used in sexual reproduction: ___​meiosis​___
4. Process of cell division that results in 2 diploid cells, used for growth and repair. __​mitosis​__
5. Two haploid cells combine during fertilization to form a ___​zygote​_____
6. Type of cells used in sexual reproduction, sperm and eggs __​gametes​____
7. Information storing molecule that makes up chromosomes: __​DNA​___
8. A matching chromosomes, it is the same size and has the same pattern: __​homolog​___
9. When there is an extra chromosome in a set, causing disorders like Down Syndrome: _​trisomy​_
10. An image of chromosomes, paired and ordered from large to small: __​karyotype​__
Do the (Chicken) Math
11. Chicken have 78 chromosomes in their body cells. How many
chromosomes are in chicken sperm? __​39​__
12. A chicken cell undergoes meiosis,
how many cells are created? __​4​__
How many chromosomes are in each cell? __​39​____
13. A chicken sperm and egg combine to create a zygote. How many
chromosomes are in the zygote? ___​39​___
14. During the process of creating a sperm cell, one chromosome
does not separate, the resulting sperm cell has an extra
chromosome. This is called ___​trisomy​____ If this sperm fertilizes
an egg, how many chromosomes with the baby chick have? ___​79​__
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