1.) Why did the F1 offspring of Mendel’s classic pea cross always look like one of the two parental varieties?…
1. Gregor Mendel selected traits which could be easily and unambiguously sorted into two classes. Each trait such as seed shape was first bred into true breeding lines or…
How are traits passed down from one generation to the next? Does the genes from both parent combine into 1 or are the inherited by a whole where 1 is express while the other stays dormant. Using Mendel’s Laws as a base for our experiment, we will determine the expected outcome of these traits to help determine how genes are passed down. We will learn see if genes are randomly passed down and which genes of the parents are more likely to be expressed in the off springs. If the genes are passed down as a whole, then how can we tell which gene is the dominant and the recessive trait. How can reproducing an experiment similar to the pea pod plant can help us answer the question and support our hypothesis? In this experiment we will learn terms and definitions related to Mendel’s Law and comparing the actually experiment’s outcome compared to the data expected by Mendel’s Laws.…
Chromosomes are threadlike structures made up of DNA and protein, while a gene is a segment of DNA on a chromosome that controls a particular trait. An allele is an alternate form of a trait. Homozygous means that all of the alleles are the same in the DNA, and heterozygous means that the alleles are mixed up. For example, homozygous would be PP or pp, and heterozygous would be Pp. The dominant factor is uppercase, and the recessive trait is lowercase. Gregor Mendel’s legacy theory has been proved by several other scientists as…
1. Mendel made the following crosses with pea plants. For the pea plants round seeds (R) are dominant over wrinkled seeds (r). Complete the Punnett squares and answer the questions about each cross.…
3. Describe the physical setting of the story. Which words or descriptions contribute to the emotional setting or mood? What is the mood that results from the author’s use of description? The physical setting of this story was "only a few miles away from what is now the great city of Cincinnati, lay an immense and almost unbroken forest." The words words that contribute to the emotional setting or mood is " He lived alone in a house of logs surrounded on all sides by the great forest, of whose gloom and silence he seemed part, for no one had ever known him to smile nor speak a needless word." The mood that resulted from the author's use of description is a depressed and dark mood.…
Mendel's initial experiments examined a single trait. The Punnett square is a tool which charts the possible combinations of alleles in offspring from two parents. Test crosses can be performed to determine whether dominant phenotypes are heterozygous or homozygous. Mendel formed his law of segregation from this work. Today we know that many traits are controlled by dominant and recessive alleles of genes. Genes have a specific location called the gene locus. Genotype describes the actual alleles for a gene; phenotype is the physical expression of the genotype.…
Inheritance: This is another theory by Gregor Mendel. He was trying to answer the question, “How are traits from parents inherited by offspring?” (Pruitt, N. L., & Underwood, L. S. (2006). He experimented with pea plants and observed that traits are passed on from parent to offspring by what we…
Gregor Mendel wondered is his principle of segregation worked with individuals who differed in two traits. To test this, Mendel crossed pure lined round, yellow seeds with pure lined wrinkled, green seeds. He predicted that the F_1 offspring would be heterozygous for both genes. Experiments had established that the allele for yellow seeds were the dominant allele (Y) and green seeds were the recessive allele (y). There were two different ways as to how seed shape and seed color would be passed onto offspring. One was independent assortment, which says that the allele for seed shape and the allele for seed color present in each parent would assort independently. Another was dependent assortment, which says that the alleles for seed color and…
Mendel was a scientist who gained a substantial amount of fame from his study of genetics. He studied the pea plant and its inheritance of certain traits.…
These two laws contributed greatly to what we know about genes today. The first law is the Law of Segregation. This law states that every organism has a pair of alleles. Within this pair of allele, one of it is randomly selected to pass on to the offspring. This supports the fact that the mother and the father has to give an allele to the offspring to form a pair of alleles. Depending on which allele is selected from each parent, the offspring will express different phenotypes. The second law is the Law of Independent Assortment. This law states that separate genes for different traits is separated independently from one another and one of them is passed onto the offspring. This means that a particular gene in the pair that is passed on has nothing to do with the selection of gene for any other trait. During gamete formation, the alleles separate from one another creating…
The first geneticist was Gregor Mendel. In 1865 he published a paper describing experiments he did with garden peas. He noticed that certain traits in the parent…
The founder of genetics, Gregor Mendel, showed that parents passed genes to offspring. Genes code for traits. For example, Mendel demonstrated that a single gene codes for the color green in peas. A single gene also codes for the color yellow in peas. The geneticists who followed Mendel had no difficulty extrapolating his findings to the rest of life. Of particular interest was the role of heredity in humans. In a casual way, people had long appreciated the importance of heredity, noting for example that a child looked strikingly like his or her mother. Geneticists sought to formalize observations of this kind, tracing, for example, the transmission of the gene for brown eyes through several generations of a family. In the course of this work it was natural for geneticists to wonder whether intelligence and traits of character were inherited with the lawlike regularity that Mendel had observed with simple traits in…
1863 Gregor Mendel, in his study of peas, discovers that traits are transmitted from parents to progeny by discrete, independent units, later called genes. His observations laid the groundwork for the field of genetics.…
-The chromosomal theory of inheritance states that genes are located on chromosomes and that the behavior of chromosomes during meiosis and fertilization accounts for inheritance patterns. Mendel’s chromosomal basis of the law of segregation occurs when the two alleles…