Allele frequency

using two alleles to determine which will be present in future generations. This equation uses a Punnet Square that makes a mathematical format to interpret the information. This possibility is referred to as Hardy-Weinberg equilibrium or Hardy-Weinberg principle. Although the Hardy-Weinberg equilibrium is rarely met in a given population, it can occur if only the allele and genotype remain the same from one generation to the next in the absence of different evolutionary influences. Alleles…

with the same genetic variability of the wild population. When comparing the 8th generation of both the random and planned breeding population, a noticeable difference can be detected. During random breeding, the most dominant allele, H, drastically outweighed the other alleles by the 8th…

segregation which states that during the formation of gamete the two allele pairs separate randomly. The second law is independent assortment which states during gamete formation each pair of the allele will segregate independently of the rest of the pairs of the chromosomes. The third law is the law of dominance which is that alleles can be dominant or recessive with the expression of the dominant trait when a minimum of one dominant allele is present. Mendel described inheritance as the…

So, a person’s ability to taste PTC depends on the type of alleles receive from taster parents. Based on this fact, a person can receive three possible combinations of the two alleles from a parent. A person can get two dominant alleles (TT) tasters, which would be considered homozygous dominant; or two recessive alleles, non-tasters (tt) making that person homozygous recessive; a dominant allele from one parent and a recessive allele form the other parent (Tt) will make that person heterozygous…

population may relate to how favourable that phenotype is for survival. This is because of relative frequency and lethality. Relative frequency is the number of times a specific allele is present within a gene pool compared to other alleles for the same trait within the gene pool.(textbook) Lethality is a little more complex. Lethal alleles cause an embryo to miscarry when they are present. Recessive lethal alleles…

Drosophila melanogaster are often used as a model organism in laboratories due to the many advantages that the organism provides: short generation time, sexual dimorphisms, cost effectiveness and easiness to maintain, amongst others. The generation time of Drosophila is around 9 – 11 days, and phenotypes in men, such as sex combs, heavily pigmented abdomen, and shape of abdomen and size, makes of Drosophila melanogaster an effective organism to study. In Drosophila melanogaster, the males do…

and Law of Dominance (Orel, 1996). The Law of Segregation states two alleles for a heritable character separate from each other during gamete formation and end up in different gametes (Reese et al., 2013). Law of Independent Assortment states that each pair of alleles separates independently of each other pair of alleles during gamete formation (Reese et al., 2013). Mendel’s last law, Law of Dominance, states that recessive alleles…

Olivia Olson Dr. Alex Hill Bio A 348 9 December 2016 Tay-Sachs: Why so Selective? There are aspects of nature that puzzle the world. Scientists, as curious as they are, try to figure out and solve nature’s great mysteries. One biological phenomenon that appears is Tay-Sachs disease. This is a disorder that tends to appear in only a handful of populations around the world. For quite sometime it was a mystery as to why this deadly disease tended to only show up in certain populations; but thanks…

1. In your own words, define what is a mutation? Abnormal inherited or acquired permeant alteration in the sequences of the nucleotides of the deoxyribonucleic acid of an organism may or may not change organism phenotype, it occurs with a frequency of less than1% among a population. 2. Are mutations bad or good for you? Justify your answer in either case Mutations could be good, bad, or may have little or no effect. Beneficial mutations: Some mutations if they happen they have a positive…

Theses certain cells are called our sex cells or gametes which are sperm cells in men and eggs in females. This is how sickle cell is passed on to each generation. If one parent maintains the allele that codes for sickle cell, then there is a possibility their offspring will as well. Meiosis happens in two stages called Meiosis I and meiosis II. Within Meiosis I, there are four phases that occur called prophase I, metaphase I, anaphase I, and…