Answer:
If the paired chromosomes fail to separate during meiosis in the female, then the resulting daughter cells will receive either 2 or no copies of chromosome 21. If the resulting egg with 2 copies of chromosome 21 is fertilized with a normal sperm, the resulting zygote with be trisomy 21
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Answer:
they are evolutionary neutral
Explanation:
Transposons are genetic mobile elements that move into the genome by means of cut-paste and copy-paste mechanisms. In consequence, transposons are known to produce mutations in the inserted genomic sequences.
Non-coding DNA regions have been generally assumed to be evolutionary neutral, it means that they might resist genetic polymorphisms (such as, for example, those caused by the insertion of transposon elements) and don't have direct effects on the phenotype of the organism. However, it is important to note that recent evidence supports the idea that noncoding sequences play important regulatory roles, thereby mutations in these genomic regions may have a deleterious effect on the organism.
Answer:Karyotyping is a laboratory procedure that allows your doctor to examine your set of chromosomes. “Karyotype” also refers to the actual collection of chromosomes being examined. Examining chromosomes through karyotyping allows your doctor to determine whether there are any abnormalities or structural problems within the chromosomes.
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