Distinct traits like this are rare in nature, as you will see later in this unit. The distinct traits in pea plants allowed Mendel to see his results without guesswork. Another important feature of pea plants is that most plants reproduce in about 90 days. The short reproductive cycle gave Me... ... middle of paper ... ..., it is called purebred. Self-fertilization produces purebred pea plants.
First, we evaluated our data on monohybrid and dihybrid corn cross seed counts against Mendel’s theoretical expectations of independent assortment and the segregation of alleles. Next, we used the Hardy-Weinberg Theorem to provide a theoretically expected value for allele frequencies for single human gene traits. Lastly, we dealt with Drosophila melanogaster and we examined red and white eye alleles to determine if this gene is sex-linked or autosomal. During the mid 1800’s Mendel bred garden peas to study inheritance. He choose these plants because of their well defined characteristics and the ability to be grown and crossed (Campbell, 1996).
These four nitrogenous bases pair together, Thymine (T) and Adenine (A) go together and Cytosine (C) and Guanine (G) pair together. DNA contains the genetic information that is necessary and important for the making of other cell components. (Regina Bailey, 2014) Gregor Mendel, also known as the father of genetics was an Austrian Monk who discovered many things such as the fundamental laws of inheritance, and that genes come in pairs, one from the mother and one from the father, he also discovered the segregation of parental genes and how they appeared in the child, whether they were dominant or recessive traits. Mendel through his work of pea plants, he discovered the detail laws of inheritance. (Famous Biologists, 2003).
Alleles are the things inside a cell that determine an offspring’s traits. There are single genes which mean the trait is decided by only one pair of alleles from each of the offspring. There are also multiple alleles which mean there are three or more alleles in each of the genes that determine the traits. Gregor Mendel discovered alleles when he was studying pea plants he discovered that there are two types of alleles dominant and recessive. Dominant alleles can mask a recessive allele and have a phenotype that appears dominant but in actuality it is a heterozygous.
Gregor Mendel, an Austrian monk, introduced a new theory of inheritance based on is experiment with peas. Mendel’s genetic laws were called the Law of Segregation, the Law of Independent Assortment, and the Law of Dominance. Mendel worked with peas that were yellow or green in color and smooth or wrinkled in shape. The characteristics in the traits were distinct and similar; therefore, they gave Mendel the conception that his experiments would be easily tested. He concluded that the yellow pea plants, which bred with the green pea plants, had yielded all yellow peas; as a result, all the hybrid children looked like only one of the parents.
An Essay on the "Rediscovery" of Mendel's Work Gregor Johann Mendel is widely considered as the founder of modern genetics as a result of his now famous pea plant experiments that were carried out between the years of 1856 and 1863. The experiments ultimately established the numerous rules of heredity that are referred to in genetics to this day (Nirenberg, n.d.). Additionally , he is known for coining the genetic terms "recessive" and "dominant" in an effort to refer to certain traits in the experiments, such as green peas being recessive and yellow ones dominant. His work was published in 1866 establishing the actions of "invisible" factors now known simply as genes in providing for visible traits in predictable ways. Mendel seemed to enjoy his accomplishments privately as his work was discovered three decades later by scientists conducting agricultural research.
Heredity is the spread of genetic characters from parents to children, this process depends on the separation and recombination of genes during meiosis (a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell) and fertilization and it results a new human that have some similar characteristics from the parents. Gregor Johann Mendel was born in 1822 and died in 1884 he was a German scientist and was the founder of the new science of genetics. Mendel made and experiment on the pea plant and his result was that the inheritance of certain traits in pea plants follows particular patterns, now referred to as the laws of Mendelian inheritance. Heredity is important because we take our characteristics from our parent that’s why we have similar traits with them for example, eye color, hair type, or skin color. Heredity wouldn’t work without these three important factors, the first factor is called cells and it is the basic structural, functional and biological unit of all known living organisms, inside the cell there is something called a nucleus it contains DNA inside it.
Gregor Johann Mendel Gregor Mendel was one of the first people in the history of science to discover genetics. He independently discovered his work and lived in Brunn, Czechoslovakia. In Brunn he was a monk and later the Abbot of the church in Brunn. While he was in Brunn he performed many experiments with garden peas. With the information he observed he wrote a paper where he described the patterns of inheritance in terms of seven pairs of contrasting traits that appeared in different pea-plant varieties.
Traits are inherited through single or multiple genes. The development of these traits can be explained by environment variables (Congress 3). Mendel also correctly surmised that two copies of every factor exist and that one factor of inheritance could be dominant over another (Murphy). The next major step in genetics was deoxyribonucleic acid or DNA. DNA, as a part of genes, was discovered to be a double helix that encodes the blueprints for all living things (Congress 3).
Plant hybridization is when you cross two plants that are genetically different in order to get a new genotype. Genetic variation is simply put as the diversity in genes. I believe that Gregor Mendel used pea plants because first of all, pea plants are very cheap plants. I also believe that Gregor Mendel used pea plants because there are so many different kinds of pea plants with different distinguishable traits. For example, pea plants come in all kinds of different colors such as purple, blue, red, white, etc.