Examlex
If the concordance rate for alcoholism were 50 percent among identical twins, which of the following would be true?
Meiosis
Cell division that results in the formation of gametes. Consists of two divisions, which result in one (female) or four (male) gametes, each of which contains one-half the number of chromosomes in the parent cell.
Chromosome Number
The total number of chromosomes in the nucleus of a cell, which varies among different species.
Gametes
Reproductive cells (sperm in males and eggs in females) that carry half the genetic information of an individual, essential for sexual reproduction.
Trisomy 21
A genetic condition caused by an extra copy of chromosome 21, leading to Down syndrome, characterized by distinct facial features, intellectual disabilities, and potential for various health issues.
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