DNA 2. Distinguish between: a. an autosome and a sex chromosome b. genotype and phenotype c. DNA and RNA d. recessvie and dominant traits e. pedigrees and karyotypes f. gene and genome a. An autosome does not carry genes that determine sex. A sex chromosome does. b. Genotype is the allele constitution in an individual for a particular gene. Phenotype is the physical expression of an allele combination. c. DNA is a double-stranded nucleic
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individual with a dominant trait. Because the trait is dominant‚ an individual with the trait could be homozygous or heterozygous for the trait. (This cannot always be determined by simply looking at the phenotype of the individual.) In a test cross‚ an individual with the dominant phenotype is crossed with a fully recessive individual Define the concepts of polygenic inheritance and pleiotropy polygenic inheritance is a non-Mendelian form of inheritance in which a particular trait is produced
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The Cross between Wild Type And Ebony Introduction: In 1909‚ Professor Morgan studied genetic change with Drosophila melanogaster‚ or fruit flies. Because of him‚ fruit flies have become popular for genetic research. Since fruit flies have a high reproductive rate and short life cycles‚ they are ideal for the study of genetics. The generation takes about 10-15 days to be complete depending on the temperature. Ideal temperatures range from 20-25°C‚ where 25° reduces the days it takes for an
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CHAPTER 8 1) DNA is found in structures called ______. -chromosomes 2) A(n) ______ is an example of an organism that can reproduce asexually. -amoeba 3)+++ Examine the figure below. Nucleosomes are made of ______. - DNA wrapped around histone proteins 4)++ As shown in the following figure‚ plant cell cytokinesis differs from animal cell cytokinesis because - Plant cells form a cell plate and animal cells do not 5)The chromosomes of eukaryotic cells are found in the _____ -Nucleus 6) Chromatin consists
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bonds‚ or more specific‚ the phosphates and the sugar which composes the sugar/phosphate back bone of the polynucleotide. 2. How does an organism’s genotype determine its phenotype? The genotype of an organism is the genetic makeup of that organism‚ it is the nucleotide bases in the organism’s DNA. The phenotype is considered the physical traits of the organism which comes from the actions of the broad variety of proteins. The body of an organism is made up by the structural proteins
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covalent bonds. In other words the sugar and the phosphates which composes the sugar/phosphate support of the polynucleotide. 2. How does an organism’s genotype determine its phenotype? An organism’s genotype is the genetic makeup of that organism. This is the bases of nucleotide in the organism’s DNA. The phenotype is the distinction between an organism’s physical traits‚ in which it derives from the actions of the broad variety of proteins. The buildup of an organism is composed of the structural
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Q1.Some genetic disorders are caused by alleles inherited from the parents. (a) What are alleles? ........................................................................................................................ ........................................................................................................................ (1) (b) Describe how embryos can be screened for the alleles that cause genetic disorders. ..........................................................
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A gene is a long sequence of nucleotides on a DNA molecule. A mutation is a change in the amount of an organism’s genetic material and when a change in genotype produces a change in phenotype‚ the individual affected is said to be a mutant. A gene mutation involves a change in one or more of the nucleotides in a strand of DNA. The sequence of nucleotides in a gene controls the order in which amino acids are made into a protein‚ therefore if the sequence of nucleotides in a gene is altered by a mutation
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Jennyfer Pena Student Application Assignment Anabolic steroids are very commonly used in today’s society. Anabolic steroids are a group of synthetic hormones that further the progress of the storage of protein and the growth of tissue. It is most commonly used by athletes to increase muscle size and strength. Anabolic steroids will not lead to offspring with increased muscle size and strength. This synthetic hormone does not connect to your DNA‚ and therefore it is not inheritable. It
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The offspring of Mendel’s classic pea cross always looked like one of the two parental varieties because a.|one phenotype was completely dominant over another.| b.|each allele affected phenotypic expression.| c.|the traits blended together during fertilization.| d.|no genes interacted to produce the parental phenotype.| e.|different genes interacted to produce the parental phenotype.| ____ 5. What was the most significant
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