The horse (Equus caballus) has 32 pairs of chromosomes, whereas the donkey (Equus asinus) has 31 pairs of chromosomes. How many total chromosomes would be expected in the somatic tissue of a mule, which is a hybrid of these two animals? Hint: a hybrid donkey is created by the union of a normal gamete from a horse and a normal gamete from a donkey. Group of answer choices 31.5 62 126 none of these is correct 63

The horse (Equus caballus) has 32 pairs of chromosomes, whereas the donkey (Equus asinus) has 31 pairs of chromosomes. How many total chromosomes would be expected in the somatic tissue of a mule, which is a hybrid of these two animals? Hint: a hybrid donkey is created by the union of a normal gamete from a horse and a normal gamete from a donkey. Group of answer choices 31.5 62 126 none of these is correct 63

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter20: Chromosomes And Human Genetics

Section: Chapter Questions

Problem 3CT: People with Down syndrome have an extra copy of chromosome 21, for a total of 47 chromosomes....

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The dog Canis familiaris is a diploid organism with 39 pairs of homologous chromosomes. What is the 2n number for the dog? What is the n number for the dog?
. With regards to the grasshopper testes experiment, diakinesis is an ideal stage to determine chromosome number due to the degree of condensation of the chromosomes? Count the chromosomes at this stage. Does it represent a diploid or a haploid number?
The radish (Raphanus sativus) has a diploid number (2n) of 18. The cabbage (Brassica oleracia) also has a diploid number (2n) of 18. Why is it that if you cross these two species to produce a hybrid with a total of 18 chromosomes in its somatic cells it is sterile, but if you form an allotetraploid (also known as amphidiploid) from these two species it is fertile?
Certain varieties of chrysanthemums contain 18, 36, 54, 72, and 90 chromosomes; all are multiples of a basic set of nine chromosomes. How would you describe these varieties genetically? What feature do the karyotypes of each variety share? A variety with 27 chromosomes has been discovered, but it is sterile. Why?
An individual heterozygous for a reciprocal translocation possesses the following chromosomes: A B • C D E F G A B • C D V W X R S • T U E F G R S • T U V W X Q. Give the products that result from alternate, adjacent-1, and adjacent-2 segregation.
Consider the example of the fusion of chromosome 21 and 14. By itself, this fusion does not cause any phenotypic differences in the carrier individuals. However, the children of carriers have a very high rate of down syndrome, as well as low fertility. Explain why this is? Be specific about what differences in chromosome number may occur in offspring, and how this occurs. Please answer asap and in short and content should not be palgarised please answer asap Consider the example of the fusion of chromosome 21 and 14. By itself, this fusion does not cause any phenotypic differences in the carrier individuals. However, the children of carriers have a very high rate of down syndrome, as well as low fertility. Explain why this is? Be specific about what differences in chromosome number may occur in offspring, and how this occurs.
An initial crossover event will occur between A and B, as indicated in the corresponding image. After this initial event occurs, a second cross over event occurs (not illustrated) involving the products of the first crossover event. Given the chromosome organization below, which two chromatids of the bivalent were involved and between which genes did the second crossover event occur to produce the indicated chromosomes? a. A B c, A b c, a B C, and a b C b. A B C, A B C, a b c, and a b c (return to the original crossover depicted in the image, and then determine how the second crossover event produced this arrangement
In the figure below, black and pink lines are used to represent nonhomologous chromosomes. Which of the figures matches the following descriptions? More than one diagram may correspond to any one statement, and a diagram may be a correct answer for more than one question. 1) Gametes produced by a reciprocal translocation heterozygote: 2) Genetically balanced gametes produced by a reciprocal translocation heterozygote:
A chromosome of genotype C D recombines with a homolog of genotype c d during meiosis when Spo11 produces a double-strand break between genes C and D. If anticrossover helicase disentangles the invading strand, the likely outcome would be A) two C D and two c d gametes. B) two C d and two c D gametes. C) one C D, one C d, one c D, and one c d gamete. D) four C D gametes. E) four c d gametes
Consider the following "pericentric" ("around the center") inversion. In one an individual, a simplified 8-gene sequence along one chromosome is 1234 5678 while a pericentric inversion occurred on their other homologous chromosome, resulting in the sequence 1265 4378 (the dot represents the centromere). Draw these homologous chromosomes lined up (as during crossing over, in Prophase l). If a crossover event occurred between gene locus 3 and 4 (slicing between them) on the original chromosome, what would the crossover products look like? What would be the "problem" with each of the chromosomes that result?
The following diagram represents two nonhomologous chromosomes: A B • C D E F G R S • T U V W X What type of chromosome mutation would produce of the following groups of chromosomes? Q.A B • T U V F G R S • C D E W X
Two phenotypically normal parents produce a phenotypically abnormal child in which chromosome 5 is missing part of its long arm but has a piece of chromosome 7 attached to it. The child also has one normal copy of chromosome 5 and two normal copies of chromosome 7. With regard to chromosomes 5 and 7, what do you think are the chromosomal compositions of the parents? Would it most likely be reciprocal translocation? It wouldn't be simple translocation because then the child would have the entirety of one chromosome and only some of the other, but in this case, there is only partial chromosome 5 and chromosome 7?