Why is the chromosome 21 trisomy the most common among live births, relative to trisomy of other autosomes? Group of answer choices It forms a Barr body It has the fewest genes It has no reapeats It is acrocentric

Why is the chromosome 21 trisomy the most common among live births, relative to trisomy of other autosomes? Group of answer choices It forms a Barr body It has the fewest genes It has no reapeats It is acrocentric

Name: Is it acrocentric Why is the chromosome 21 trisomy the most common amo
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Description: Is it acrocentric Why is the chromosome 21 trisomy the most common among live births, relative to trisomy ofother autosomes?Group of answer choicesIt forms a Barr bodyIt has the fewest genesIt has no reapeatsIt is acrocentric

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter14: Human Inheritance

Section: Chapter Questions

Problem 15SA: Match the chromosome terms appropriately. ___ polyploid a. symptoms of a genetic disorder ___...

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On rare occasions, an organism may have three copies of achromosome and therefore has three copies of the genes on thatchromosome (instead of the usual number of two copies). Forsuch a rare organism, the alleles for each gene usually segregateso that a gamete will contain one or two copies of the gene. Let’ssuppose that a rare pea plant has three copies of the chromosomethat carries the height gene. Its genotype is TTt. The plant is alsoheterozygous for the seed color gene, Yy, which is found on adifferent chromosome. With regard to both genes, how manytypes of gametes can this plant make, and in what proportions?(Assume that it is equally likely that a gamete will contain oneor two copies of the height gene.)
bob) ² most to RA turn pool bor r 11 GT OF Parent 1 Question 5. In a related species of dragons, the fire breathy and flying loci are present on the same chromosome. Non-dividing diploid cells from two dragons are shown above. Parent 2 o s mont iluess is vrogor add to koder sonst has susu boloibeng on a tad A. What is the genotype of parent 1? (Use chromosomal notation if appropriate) on Rr/11 B. What is the genotype of parent 2? (Use chromosomal notation if appropriate) L o noturno od to 200 200 and Rr/L C. Draw the what a cell from parent 2 would like in PROPHASE of MEIOSIS I. For the purpose of this question, ASSUME NO CROSSOVER between the fire breathing and flying loci. Make sure you label alleles on each DNA molecule. VL XL xr xr D. Draw what the two daugher cells would look like after the cell you drew in (C) has undergone meiosis I (the cells are ready to undergo meiosis II; assume no crossover between the indicated loci in meiosis I). Make sure you label alleles on each DNA…
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Down syndrome is: Trisomy of chromosome 12 Trisomy of chromosome 18 Trisomy of chromosome 13 O Trisomy chromosome 21 the gelatinous substance within the nuclear envelope called O nucleoplasm karyoplasm O cytoplasm O cytosol
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Meiosis Explains Mendels Results: Genes Are on Chromosomes The following diagram shows a hypothetical diploid cell. The recessive allele for albinism is represented by a, and d represents the recessive allele for deafness. The normal alleles for these conditions are represented by A and D, respectively. a. According to the principle of segregation, what is segregating in this cell? b. According to Mendels principle of independent assortment, what is independently assorting in this cell? c. How many chromatids are in this cell? d. Write the genotype of the individual from whom this cell was taken. e. What is the phenotype of this individual? f. What stage of cell division is represented by this cell (prophase, metaphase, anaphase, or telophase of meiosis I, meiosis II, or mitosis)? g. After meiosis is complete, how many chromatids and chromosomes will be present in one of the four progeny cells?
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