Word Sentences - Chromosomes and Cell Reprod

Word Sentences - Chromosomes and Cell Reprod - are...

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Chromosomes and Cell Reproduction Word Meanings/Sentences 1. Gametes are an organism’s reproductive cells, such as sperm or egg cells. 2. Binary fission is a form of asexual reproduction that produces identical offspring. 3. A gene is a segment of DNA that codes for a protein or RNA molecule. 4. As a eukaryotic cell prepares to divide, the chromosomes -the DNA and the proteins associated with the DNA- become visible. 5. The two exact copies of DNA that make up each chromosome are called chromatids . 6. The two chromatids of a chromosome are attached at a point called a centromere . 7. Homologous chromosomes are chromosomes that are similar in size, shape, and genetic content. 8. When a cell, such as a somatic cell, contains two sets of chromosomes, it is said to be diploid . 9. When a cell, such as a gamete contains one set of chromosomes, it is said to be haploid . 10. A zygote is a fertilized egg cell, the first cell of a new individual. 11. Autosomes
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Unformatted text preview: are chromosomes that are not directly involved in determining the sex of an individual. 12.The sex chromosomes , one of the 23 pairs of chromosomes in humans, contain genes that will determine the sex of the individual. 13. Abnormalities in chromosome number can be detected by analyzing a karyotype , a photo of the chromosomes in a dividing cell that shows the chromosomes arranged by size. 14. The cell cycle is a repeating sequence of cellular growth and division during the life of an organism. 15. A cell spends 90 percent of its time in the first three phases of the cycle, which are collectively called interphase. 16. The process during cell division in which the nucleus of a cell is divided into two nuclei is called mitosis . 17. The process during cell division in which the cytoplasm divides is called cytokinesis . 18. Cancer , the uncontrolled growth of cells, may result....
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This note was uploaded on 09/06/2011 for the course BIO 201 taught by Professor Mr.bajom during the Spring '09 term at Abu Dhabi University.

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Word Sentences - Chromosomes and Cell Reprod - are...

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