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Biology 12
Haploid/Diploid “Practice”
Name:
1. A plant has root tip cells that contain 14 chromosomes. What is the
plant’s diploid number?
2. An ovum contains 15 chromosomes. The animal’s diploid number is
and its haploid number is
.
3. An organism’s diploid number is 66. How many chromosomes does a
gamete have?
4. If the haploid number is 21, how many chromosomes are in the zygote?
5. If a cell’s haploid number is 19, how many tetrads would line up at the
equator in metaphase I?
6. A plant has 16 pairs of homologous chromosomes. How many sister
chromatids would be moving to opposite poles in anaphase II?
7. If a fertilized ovum has 52 chromosomes, what is the diploid number for
that species?
Haploid number?
8. If n = 8, what is the diploid number?
9. The haploid number is expressed with the symbol
10. A zygote contains n / 2n chromosomes. (circle the correct one)
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