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What percentage of trisomy 18 patients will survive after their first year of life?
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- You suspect that a serious developmental disorder is due to a chromosome abnormality and prepare a karyotype from an affected individual. In analyzing the karyotype, how could you distinguish trisomy from a chromosome structural defect such as a duplication? a) The chromosome number in both cases would be normal, but in trisomy there would be three chromatids on one chromosome and in a duplication there would be two chromatids on one chromosome. B) The chromosome number in trisomy would be normal; in a duplication, there would be one more chromosome. C) In both cases there would be an extra chromosome, but in trisomy there would be three chromatids on one chromosome and in a duplication there would be two chromatids on one chromosome. D) In trisomy there would be one extra chromosome; in a duplication, the number of chromosomes would be normal, but one chromosome would have two copies of a portion of the chromosome.
- or stiffening of the muscles, occurs within 24 hours of death and disappears within 36 hours.Time of death can also be estimated by measuring the concentration of potassium in the victim's eye fluids, because cells in the eyeball release potassium at a predictable rate after death.
- A type of fat made by the body from saturated fat; a minor part of fat in foods.A lipid that forms an essential component of animal cell membranes and acts as a precursor molecule for the synthesis of other biologically important steroid hormones.