Chromosomes

fissions of the nucleus which result in four gametes or sex cells. Each cell possesses half the number of chromosomes of the parent cell. The process of meiosis occurs…

experience cognitive delays, but the intellectual disability is usually mild to moderate. You get Down Syndrome by having a extra set of chromosomes. The female has 2 sets of chromosomes and the male has 1 set of chromosomes. Before the offspring is created the female parent has to get rid of 1 set of chromosomes, but since she didn’t get rid of the extra set of chromosomes the offspring is…

is prophase. During prophase, the chromosomes condense, the nucleolus disappears and the mitotic spindle forms (the spindle along with the microtubules help chromosomes move in later stages. Next, the prometaphase begins. During the prometaphase, the nuclear membrane breaks down and the mitotic spindle beings to connect with the chromosomes. Next, the metaphase which is marked by the alignment of the chromosomes in the middle on the mitotic spindle. The chromosomes then begin to separate into…

like ataxia, seizures, epilepsy, severe mental retardation and microcephaly. Mutations on the SLC9A6 gene cause Christianson Syndrome, this gene is located on the X chromosome. This disorder is usually inherited, In males, by receiving just one of the mutated chromosomes. As a result of the rarity of inheriting two mutated X chromosomes of this disorder, The majority of the females, who were exposed to Christianson Syndrome become carriers. Even though…

For a century, scientists studied chromosomes by looking at them under a microscope. In order for chromosomes to be seen this way, they need to be stained. Once stained, the chromosomes look like strings with light and dark bands, and their picture can be taken. A picture, or chromosome map, of all 46 chromosomes is called a karyotype. The karyotype can help identify abnormalities in the structure or the number of chromosomes. To help identify chromosomes, the pairs have been numbered from 1 to…

different Chromaseratops offspring. It is like that because of meiosis. That process creates the cells and gives them chromosomes which become homologous pairs. From there, you can make a lot of different combinations of gametes. For this lab, there was 8 different gametes since there was 3 homologous pairs. For a human there would be way more combinations since we have 23 pairs or 46 chromosomes. Through independent assortment, you receive 2 homologous pairs which can be from the same gene, but…

genetic information in cells separating during meiosis, resulting in sex cells of an organism carrying a single copy of the parent’s genetic information . Cells have two copies of genetic information stored in theirevery chromosomes. Each chromo carries one copy of each gene. Chromosomes that make up the allele can be the same or differ from each other . Alleles that have two copies of the same trait are homozygous. If the alleles differ the cell will express the dominant trait phenotypically,…

Genetic Diseases And Disorders Research Paper Down syndrome is a disorder of a person's chromosomes that cause mild to severe physical and mental disabilities. People are affected from birth and until death. Noticeable physical problems include a small skull , a narrowed or flat nose bridge, poor muscle tone, and folds beneath the eyes. It occurs in about one in every 700 births. Nearly 1600 kids are born with down syndrome in the united states. Most people that have down syndrome have…

inside it represented with beads as the four pairs of chromosomes. Outside of the nucleus there will be centrioles drawn. This is where meiosis begins and replicates the cell Spindle fibers start to form on the centrioles and chromosome pairs bind together making tetrads. Nuclear membrane starts to dissolve. Nuclear membrane will be drawn in dashed lines. The chromosomes will be homologous pairs with centromere in the center holding the chromosome together and there will be spindle fibers…

Section 1 The genetic disorder Cri Du Chat stems from the deletion of a portion the p arm of chromosome 5 in the affected person. This deletion is seemingly spontaneous in most affected individuals. “Approximately 90% of cases results from a sporadic, or randomly-occurring, de novo deletion” (6. pg. 606). This deletion may include a fraction to the entire loss of the p arm of the fifth chromosome as a whole. Taking into consideration the very spontaneous nature of this disorder, at…