Answer the following questions with either True or False.Provide a justification for your choice.(a) Alleles occupy different loci on homologouschromosomes.(b) Although alleles govern the same kinds of characteristics,they do not necessarily contain identicalinformation.(e) The special region on a duplicated chromosome that holdsthe sister chromatids together is a centrosome.

In an individual, chromosomes occur in pair that is why there are two alleles (alternative forms of…

Answered: Answer the following questions with…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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Answer #8
Examine the following diagrams of cells from an organism with diploid number 2n = 6, and identify what stage of M phase is represented.
consider the metaphase (mitosis) chromosome spread of the following related animal species. The first meiotic division in the hybrid animal shows a mixture of paired and single chromosomes. Why do you suppose this occurs? Can you suggest a possible relationship between the mixed chromosomes and the observed sterility of the hybrid?
The haploid human genome consists of approximately 3.2 × 109 bp (or 6.4 × 109 bp per diploid genome). Assuming that DNA is B-DNA, calculate the total length of a single cell’s DNA.
Examine the following diagrams of cells from an organism with diploid number 2n = 6, and identify what stage of M phase is represented.
A schematic drawing of a Holliday junction is shown next. One chromatid is shown in red, and the homologous chromatid is shown in blue. The red chromatid carries a dominant allele labeled A and a recessive allele labeled b, whereas the blue chromatid carries a recessive allele labeled a and a dominant allele labeled B.
In fruit flies, chromosomal crossing over does not occur in meiosis in males, whereas crossing over does occur in meiosis in females. In fruit flies that are heterozygous at many genes (i.e. many maternal and paternal versions of the genes differ), at what stage would cells no longer be heterozygous for any gene during the process of meiosis? a)After the second meiotic division in males, and after the first meiotic division in females. b)After the second meiotic division in both males and females. c)After the first meiotic division in both males and females. d)After the first meiotic division in males, and after the second meiotic division in females.
Answer the following questions based on the following karyotype shown. Write TRUE if the statement is correct. Write FALSE if the statement is false and provide the correct answer.
In which stage(s) of the cell cycle, mitosis or meiosis do each of these processes occur (multiple stages apply to some) Crossing-over: Chromosome supercoiling: Separation of sister chromatids: DNA synthesis: Chromosome reduction from 2N to N: 4. A previously undiscovered single celled organism was found living at a great depth on the ocean floor. Its nucleus contains only a single, linear chromosome consisting of 7x10^6 nucleotide pairs of DNA coalesced with three types of histone-like proteins. The analysis of individual nucleosomes revealed that each unit contained one copy of each protein and that the short linker DNA had no protein bound to it If the entire chromosome consists of nucleosomes (discounting any linker DNA), how many are there and how many total proteins are needed to form them?
Hi, could your please answer this question? I'm so confused. The following diagram (picture added) shows 2 pairs of autosomal chromosomes in a karyotype of a biological woman. Based on the karyotype, a genetic counselor determined that there is evidence that a translocation occurred between two non-homologous chromosomes. The other 21 pairs of chromosomes are NOT shown in this diagram. Assume no chromosomal aberrations occurred in the other chromosomes. As a student-researcher, what would be your answer if the genetic counselor asks you if you can determine whether the translocation occurred in a somatic cell, germ-line cell, or whether this can even be determined from the figure? provide the reasoning for your answer.
(a) A person with Down syndrome. She has 47 chromosomes rather than the common number of 46, because she has an extra copy of chromosome 21. (b) A wheat plant. Cultivated wheat is derived from the contributions of threewild species with two sets of chromosomes each, producing an organismwith six sets of chromosomes.Do these examples constitute variation in chromosomestructure or variation in chromosome number?
Assume that the diploid number of a certain species is four chromosomes, two large and two small (2n=4). a) Of the following figures, which represents a 3n (triploid) cell in mitotic metaphase? b) For each of the wrong answers from part (a) above, explain briefly why it cannot represent a triploid cell in mitotic metaphase.

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