GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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genes that are close to each other on a chromosome and so are more likely than others to be inherited together
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a trait controlled by a gene on a sex chromosome
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describes the genotype of a trait for which the two alleles an individual carries are the same
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None of the above
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Detailed explanation-1: -Linked genes sit close together on a chromosome, making them likely to be inherited together (left). Genes on separate chromosomes are never linked (center). But not all genes on a chromosome are linked.
Detailed explanation-2: -When genes are close together on the same chromosome, they are said to be linked. That means the alleles, or gene versions, already together on one chromosome will be inherited as a unit more frequently than not.
Detailed explanation-3: -Listen to pronunciation. (LING-kij) The tendency for genes or segments of DNA closely positioned along a chromosome to segregate together at meiosis, and therefore be inherited together.
Detailed explanation-4: -Linkage is the tendency of genes present in the chromosome to stay intact and transfer to the next generation whereas crossing over is the exchange of chromosomal sections to disrupt built links and form new linkages. Linkages generate parental types and increases in age as the linkage increases.