Chapter 12 Dna And Rna Answer Key
Genetic disorders are caused by changes in DNA sequences which can only be passed from one generation to another under specific circumstances. As a result, the chromosome has only one arm. A. Chromosomes are thread-like structures found in the nucleus of all living cells.
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- Chapter 12 dna and rna answer key 12-2
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Dna And Rna Worksheet Answer Key Pdf
C. Sickle cell anaemia: Sickle-cell anaemia is an autosome-linked recessive trait exhibiting change in shape of the red blood cells from biconcave disk to sickle shape under low oxygen tension. • The ribose sugar and the phosphates form the backbone of a polynucleotide chain with nitrogenous bases linked to sugar moiety and projecting from the backbone. Some of the examples of monogenic disorders are sickle cell anemia, cystic fibrosis, polycystic kidney etc. • The end of the chain which has a free phosphate moiety at 5'-end of ribose sugar is referred to as 5'-end and the other end of the chain having a free 3'-OH group at the ribose sugar is referred to as 3' -end of the polynucleotide chain. D. Chapter 12 dna and rna answer key 12-2. Chromosomes are mainly made up of DNA. They play a structural and catalytic role during translation. Question 5: How are the items in groups A, B and C inter-releated?
Chapter 12 Dna And Rna Answer Key 12-2
Leber hereditary optic neuropathy|| Mitochondrial. C. DNA fingerprinting is a method for comparing the DNA sequences of any two individuals. A monohybrid cross is useful in determining the dominance of genes. 4) Telocentric chromosomes: In telocentric chromosomes, the centromere is present at the terminal end. Nitrogen bases are attached sugar from inwards that extends to join hydrogen bond and the complimentary nitrogenous base from other strand. Effect on blood-glucose level. The applications of DNA fingerprinting are as follows: -. 1) Metacentric chromosomes: In these chromosomes, the centromere is present in the middle, which gives rise to two equal arms. 1% that makes every individual unique. If a carrier/sufferer of a genetic disorder marries a person who is also a carrier/ sufferer of the disorder, then there are chances that disorder will be passed on to the offsprings. A. Chapter 12 dna and rna answer key section review 12-1. Monohybrid cross is a cross between two parents that have one pair of contrasting characters; for example, if pea plant with yellow seed coat is crossed with pea plant having green seed coat then in the F1 generation all the plants produce yellow seeds. This mutation may be present on one or both the chromosomes. This disorder arises during development.
Chapter 12 Dna And Rna Answer Key Section Review 12-1
The total number of chromosomes in people affected with Down's syndrome becomes 47. B. Dihybrid cross is a cross between two parents that have two pairs of contrasting characters, for example, a plant having round and yellow seeds is crossed with a plant having green and wrinkled seeds. Page No 193: Question 1: a. Example- a cross between tall plant having red flower and a dwarf plant having white flower. • Every nucleotide residue has an additional −OH group present at 2' -position in the ribose. DNA fingerprinting is widely used in forensics since DNA of every tissue from an individual has the same degree of polymorphism. 44+XXY||Pale skin, white hairs|. Monogenic disorder||Pale skin, white hairs|. Dna and rna worksheet answer key pdf. It was the first discovered and described chromosomal disorder in humans. It has a double helix structure, similar to a ladder, which is twisted at both ends. Science And Technology Solutions Solutions for Class 9 Science Chapter 16 Heredity And Variation are provided here with simple step-by-step explanations. There is no particular treatment for sickle cell anemia, the treatments which are available provide symptomatic relief from the symptoms associated with this disorder.
Rather, we sholud support and accept people with such disorders, so that they can live a normal life. All Science And Technology Solutions Solutions for class Class 9 Science are prepared by experts and are 100% accurate. 44+XXY||Men are sterile|. As a result, it has one arm, which is extremely long and the other, which is extremely short. • A nitrogenous base is linked to the ribose sugar through N-glycosidic linkages to form a nucleoside (like adenosine, guanosine or cytidine and uridine). Explain Mendel's monohybrid progeny with the help of any one cross.