Chromosomal inheritance relates to how a person has 2 sets of chromosomes, 46 in total, that they inherited their parents. Chromosomes carry the genes, particularly the alleles that the offspring inherit. Gregor Mendel had no understanding of chromosomes when conducting his studies. He experimented and tested peas and discovered that some genes were dominated (showed up) while others were recessive (hidden). What he didn’t know was that chromosomes contained the genes that were responsible for Mendelian Inheritance. Chromosomal inheritance helped connect the gap between genetics and inheritance.
The “disorders” that the videos are referencing are essentially the results of when a disruption in the body causes it to not properly maintain …show more content…
The rates are about 1 in every 1,250 births. Normal adults have 46 chromosomes. However, in the case, the person has 47 chromosomes as a third chromosome is attached to the chromosome #21. Now there are 3 chromosomes where they should only be two (to make a pair). That is what is referred to as “trisomy nondisjunction”. A person born with Down Syndrome is known to have short, broad hands, stubby fingers, rough skin, small round face, a protruding tongue. They are usually mentally retarded and have a shorter life than than most people. Another variation of Down Syndrome, although not as common, deals with the translocation of genes between chromosome #14 and chromosome #21.This is deleterious because all the chromosome pairs shown in a karyotype normally have the same length, staining pattern, and centromere position. However, with this translation, either Chromes #14 or 21 will be extra long or extra …show more content…
Essentially, hemophiliacs aren 't able to clot blood properly, which could lead to bleeding out and death. Normally, there is a 1 in 5000 chance for male births, while annually, 400 babies are born with hemophilia. It’s caused by a recessive gene that lies on the female X chromosome. Symptoms include excessive bleeding and bruising. This disorder is unique in that it’s commonly found in males. Females are most commonly carriers, but rarely have the disorder. This is due to the fact that it is a sex-linked recessive gene that’s on the x chromosome, which guys only have one of, while females have
The “disorders” that the videos are referencing are essentially the results of when a disruption in the body causes it to not properly maintain …show more content…
The rates are about 1 in every 1,250 births. Normal adults have 46 chromosomes. However, in the case, the person has 47 chromosomes as a third chromosome is attached to the chromosome #21. Now there are 3 chromosomes where they should only be two (to make a pair). That is what is referred to as “trisomy nondisjunction”. A person born with Down Syndrome is known to have short, broad hands, stubby fingers, rough skin, small round face, a protruding tongue. They are usually mentally retarded and have a shorter life than than most people. Another variation of Down Syndrome, although not as common, deals with the translocation of genes between chromosome #14 and chromosome #21.This is deleterious because all the chromosome pairs shown in a karyotype normally have the same length, staining pattern, and centromere position. However, with this translation, either Chromes #14 or 21 will be extra long or extra …show more content…
Essentially, hemophiliacs aren 't able to clot blood properly, which could lead to bleeding out and death. Normally, there is a 1 in 5000 chance for male births, while annually, 400 babies are born with hemophilia. It’s caused by a recessive gene that lies on the female X chromosome. Symptoms include excessive bleeding and bruising. This disorder is unique in that it’s commonly found in males. Females are most commonly carriers, but rarely have the disorder. This is due to the fact that it is a sex-linked recessive gene that’s on the x chromosome, which guys only have one of, while females have