controlled by a dominant factor. 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
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Introduction Drosophila melanogaster is a common fruit fly that has been useful for most experiments in the study of Genetics. The male and the female fruit fly are similar and different in regards to how they look‚ structurally. They are similar because both genders have a head‚ thorax‚ proboscis‚ antennae‚ eyes‚ and mouth parts. However‚ males are smaller than females and have about five abdominal segments as opposed to the seven that the female has. The life cycle of these fruit flies consist
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Grade 11) 1. Blood typing can be used to identify a parent in that the blood type can prove that a person is not the parent of a child rather than determine without question who the parent is. A‚ B‚ AB and O blood groups are the result of three alleles. Allele A and B are co-dominant and O is recessive to both A and B. Should the discrepancy continue‚ tissue typing and DNA fingerprinting will be used. Read through the following information and answer the questions below: In a maternity ward of a hospital
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DNA. This essay will explore some of the reasons behind how and why these differences in appearance arise‚ from the base sequence of DNA through to the observed phenotype. Genes come in different varieties‚ called alleles. Somatic cells contain two alleles for every gene‚ with one allele provided by each parent of an organism. Genotype refers to the information contained in an organisms DNA‚ or genetic material. Its phenotype is the physical expression of its genotype. Although every creature is born
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Case Study – A Sickeningly Sweet Baby Boy Part I Questions 1. What additional information would you want to know to understand Emma and Jacob’s panic? To understand the cause of the panic that was brought to Jacob and Emma‚ you would need to know more about the state of the baby. This article just describes that the boy was having difficulty feeding‚ and after seven days he stopped feeding. This isn’t a situation that brings upon panic right away‚ but for Emma and Jacob it did. The panic
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homozygous and heterozygous traits‚ dominant and recessive traits and genotype and phenotype That’s right! When do we say that a trait is homozygous? Yes‚ ____________! If the alleles both carry the same trait‚ they are homozygous‚ Very good! How about the heterozygous trait? Yes‚ ____________! If the alleles carry opposite traits they are heterozygous. Brilliant! How about dominant and recessive traits? Yes‚ ____________! Dominant traits are the observable traits of
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the ratio of their offspring should be about ________3:1____________________________. 11. A trait that is hidden in the heterozygous condition is said to be a _________recessive________________ trait. 12. An organism that has two different alleles for a trait is called ___heterozygous__________________. 13. The process that results in Down syndrome is called ________nondisjunction______. 14. If a species normally has 46 chromosomes‚ the cells it produces by meiosis will each have
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or recessive allele. There was a table on the paper that you could use to determine that. Procedure 17.6 For this particular procedure you also had to determine if Huntington’s disease is inherited as a dominant or recessive allele. A table was provided in order to come up with that as well. Procedure 17.7 Then for this procedure it was also pretty much like the other procedures. On this one you have to determine if Phenylketonuria is inherited as a dominant or recessive allele. Table 17
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Sex-linked traits are genetic characteristics determined by genes located on sex chromosomes. Genes are pieces of DNA on chromosomes that carry information that are responsible for inheriting traits. Different forms of the same gene are called alleles. One allele for a certain trait is inherited from a mother and one from a father. These traits are passed down from parent to their offspring by sexual reproduction. Fragile X syndrome (FXS) or Martin-Bell syndrome is a genetic syndrome that causes autism
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formulated by a man often times called the "father of genetics‚" Gregor Mendel. He determined that individuals have two alternate forms of a gene‚ referred to as two alleles. An individual can me homozygous dominant (two dominant alleles‚ AA)‚ homozygous recessive‚ (two recessive alleles‚ aa)‚ or heterozygous (one dominant and one recessive allele‚ Aa). There were tow particular crosses that took place in this experiment. The first cross-performed was Ebony Bodies versus Vestigle Wings‚ where Long wings
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