Chromosome

controlling and coordinating their movements. Joubert Syndrome is caused by a mutation of cells during cell development that prevent the cilia of the cells from fully developing. The condition is an autosomal recessive trait that are carried on X chromosomes in an X-linked recessive pattern. The changes in the genes of the cells cause mutations to happen, which then leads to Joubert Syndrome. More than 30 genetic mutation occur to cause Joubert Syndrome. Since Joubert Syndrome is inherited at birth

forms a diploid zygote. This is how the chromosome number in a life cycle changes from haploid to diploid (23 to 46). A lack of chromosomes or having more than 23 chromosomes can cause syndromes like Down Syndrome or Turner Syndrome, which will be discussed later. Mitosis is the division of a haploid or diploid cell into two duplicate daughter cells. Mitosis is basically the division of a nucleus into two duplicate cells, and both have the same number of chromosomes. These identical cells are called totipotent

Colon Cancer Disease Name: Colon Cancer Chromosome Number: #2 Locus Designation: 2p16 In the summer of 1993 researchers discovered a gene, known as MSH2, is lacking within colon cells. The MSH2 genes main function is to detect and correct small mutations that occur during cell division. The cause of colon cancer arises when this gene does not provide this protection to colon cells. This lack of protection causes multiple mutations within the colon cells until they become

Fragile X Syndrome • Etiology (cause) – Fragile X Syndrome is inherited. Fragile X is caused by a mutation of the X chromosome in the FMR-1 gene. This specific mutation is an expansion or lengthening of the gene. The X chromosome is one of two chromosomes that determines the sex of a person. When this gene lengthens, it prevents production of a protein that is involved with brain development and other important functions of the body. In a typically developing human, the FMR-1 gene duplicates

1. What are Traits? All human beings are unique from one and another, each complex organism has certain traits that can be seen some harder than others. Some traits that are easier to see such as hair and eye color, the other ones that are harder to see are vocal talents, Asthma, and disease risk. Traits can be created through the environment or through genes. The environment can change traits such as the things we enjoy or the sounds that we create, like language, the language we speak is considered

Lard WEeduck Dr. Lerdkig Lab Report #2 November 9, 2011 Lab Report: Environmental Control of Sex Determination Introduction Ceratopteris richardii, known as a C-fern has a lifecycle referred to as alteration of generations, which consist of neither haploid nor diploid dominant. C-ferns are homospours plants which are important in that they can produce hermaphrioditic gametophytes in order to be able to self fertilize. However, some of the homospourous C-ferns only produce male gametophytes

are a carrier for the disease. Thelma Thymine has a genotype, s s for this disease which means you have the disease. Genetic traits are passed down from parent to their children through genes on chromosomes found in the nucleus of the cell. Each parent contributes half of their DNA on 23 pairs of chromosomes. Genetic disease and disorders are passed

Common names~ Trisomy 21 D.S. (down syndrome) Trisomy 21 stands for a genetic disorder caused by the presence off all or part of a third copy of a chromosome. Extra facts~ There are parental tests “1 in every 1000 children are affected by down syndrome” Down syndrome can be in both recessive and dominant genes. Symptoms to look out for~ Decreased or poor muscle tone. Short neck, with excess at the neck. Flattened facial profile and nose . Small nose, head, ears, and nose. Upward slanting eyes

different types of cell other than their sizes. (Brooker et al, 2014) The nucleus of eukaryotic cells is usually takes up between 10-20% of the cell volume, and it’s primary function is to protect the genetic material stored as linear, often diploid chromosomes, as well as the production of ribosome subunits (Brooker et al, 2014). The majority of the cells genetic material is stored in the nucleus which is surrounded the double membraned nuclear envelope, while extra genetic material is stored within mitochondria

Karen Alvarez, PhD Biology 151 Laboratory F6 4 September 2015 Effect of Trifluralin on Mitotic Cells E.G Lignowski and E.G Scott, authors of the journal Weed Science Society of America, both experimented on the effect of the herbicide trifluralin. Their goal for this experiment was to “study the mitotic inhibition produced by trifluralin in more detail to determine if this herbicide was acting as a metaphase inhibitor” (Lignowski 267). Essentially, their hypothesis was right. However the steps