
Concept explainers
To write:
Correct vocabulary term for the given definition.
Introduction:
A cell grows until it reaches its size limit, then it either stops growing or divides. Most cells undergo division. Cell division helps a cell to reproduce. In order to maintain the same number of chromosomes in each generation, an organism produces gametes. Gametes are sex cells and have half the number of chromosomes.

Answer to Problem 1A
Diploid (2n)
Explanation of Solution
A cell with n number of chromosomes is called a haploid cell. When one haploid gamete fuses with another haploid gamete, the process is called fertilization. The result is a cell with 2n number of chromosomes; n chromosomes from male parent plus n chromosomes from female parent. A cell with 2n number of chromosomes is called a diploid cell.
When two cells with n number of chromosomes fuse, a diploid cell with 2n number of chromosomes is formed.
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