Chromosome

melanogaster is excellent in studying and observing genetic traits, this is due to the flies’ rapid reproduction, numerous offspring, and three chromosome genome.2 Of these three chromosomes, the X chromosome is essential in determining sex, as sex is determined by the ratio of X chromosomes to autosomes in D. melanogaster.2 Male and female D. melanogaster can be distinguished by certain morphology differences. Females are usually larger than males, with stripes along

1. Twins can occur in two main ways which is why there is two main categories of twins. One type of twins occurs from one sperm fertilizes one ovum. This fertilized egg begins to duplicate and divide, however, if the fertilized egg splits apart completely in early development, two separate organisms start to grow creating monozygotic twins or more commonly called, identical twins. With monozygotic twins, because they split from the same zygote, they share identical genetics. However, a more common

Ehlers Danlos Syndrome has mutations in the gene collagen, type V, alpha 1 (COL5A1). Which is connected to the long arm (q) of chromosome 9 (9q34.2-q34.3) also the gene collagen type V, alpha 2 (COL5A2), on the long arm of chromosome 2 (2q31). People who have EDS have a 50% chance they have one of these mutations in their genes. Ehlers Danlos also has an autosomal dominant inheritance. There have been a dozen genes found to have mutations that cause Ehlers Danlos. Usually the most common result

say that 10 % go through mitosis at any time so approximately 10. 3. Understand the basic differences between mitosis, meiosis, and binary fission.  Is mitosis  more similar to meiosis or to binary fission? Explain your reasoning. In mitosis the chromosomes align and then split in two where they replicate the original cell. The only stage of mitosis creates daughter diploids

Neuroscience 4100 Kristen Miller Extra Credit Paper Batten Disease The Batten disease is characterized as an autosomal recessive, fatal disorder that consists of detrimental effects on the nervous system. Although the disease typically presents during childhood, there are many forms that show signs at various ages. Batten disease, also known as Spielmeyer-Vogt-Sjögren-Batten disease, is named after the British pediatrician who first correlated its symptoms with the disease progression in 1903.

Type II syndactyly or synpolydactyly(SPD) is a semi dominant inherited limb malformation that involves a fusion of digits. It is caused by mutations in HOXD13 on chromosome 2 due to polyalanine repeat expansions. Polyalanine repeats in SPD are mitotically and meiotically stable, causing polymorphisms to be rare, unlike other nucleotide repeat expansions such as Friedreich’s ataxia. HOXD13 is a member of the HOX family, a family of transcription factors that are proteins which contain homeodomain

Ichthyosis is a skin disease that can be inherited or acquired. Ichthyosis cause the appearances of scales (like fish) on the skin, which is where is gets its name. Inherited Ichthyosis shows in the first year of life, and sticks with the person for their entire life. There are five different types of the condition, and there is no cure for any of them. Ichthyosis Vulgaris is mild scaling and dryness. People with Epidermal Ichthyosis have thick scales, and blister easily. Lamellar Ichthyosis is when

DNA means Deoxyribonucleic Acid, it is a self replicating material which is present in nearly all living organisms, it is the carrier of genetic information. Inside the DNA there is a nucleus which contains 23 pairs of chromosomes. They are long strings of DNA. Each string of DNA is shaped like a twisted ladder, this is called a Double Helix. ​ A Genome is a complete set of genes or genetic material found in a cell or organism. ​ A gene is the unit or heredity which is transferred from a parent

Gender isn’t a key factor when it comes to determining a autosomal inheritance, Only sex-linked chromosomes like X or Y have an effect on the ratios for male and females having mutant alleles. This phenomenon is cause by the specific genome that each gender has, males have the XY chromosomes for sex and females have XX sex chromosomes. The reason for using Drosophila melanogaster flies is for their great genetics and fast reproduction that allows us to see in a short

Seckel Syndrome reported by Mann and Russel in 1959, this condition was extensively studied by Seckel in 1960. More precise criteria for diagnosis have been recently been set forth. ABNORMALITIES: The abnormalities regarding growth are- Prenatal onset of marked growth deficiency. Average birth weight at term is 1543g (1000 to 2005g) Mean postnatal growth is 1543 deficiency is -7.1 SD +/- 2.08. One adult was 104 cm. Delayed bone age. Genitalia showing Cryptorchidism. In Craniofacies abnormalities