1. Let's take the example of the gray kangaroo (Macropus fuliginosus) whose ploidy is 8 and the sexual determinism of this species is carried out according to the XY mode. From a male kangaroo: a) Draw the karyotype of this individual, obtained by stopping division at metaphase. Your drawing should include: a. All maternal and paternal chromosomes involved (different colors) b. An example of autosome and heterochromosome c. An example of homologous chromosome, sister chromatid and centromere. d. The total number of chromosomes in a metaphase kangaroo cell. e. A sentence to explain the difference between the terms gene and allele that might apply to this species.

1. Let's take the example of the gray kangaroo (Macropus fuliginosus) whose ploidy is 8 and the sexual determinism of this species is carried out according to the XY mode. From a male kangaroo: a) Draw the karyotype of this individual, obtained by stopping division at metaphase. Your drawing should include: a. All maternal and paternal chromosomes involved (different colors) b. An example of autosome and heterochromosome c. An example of homologous chromosome, sister chromatid and centromere. d. The total number of chromosomes in a metaphase kangaroo cell. e. A sentence to explain the difference between the terms gene and allele that might apply to this species.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter14: Human Inheritance

Section: Chapter Questions

Problem 2GP: Human females have two X chromosomes XX; males have one X and one Y chromosome XY. a. With respect...

See similar textbooks

Similar questions

A young couple is planning to have children. Knowing that there have been a substantial number of stillbirths, miscarriages, and fertility problems on the husband’s side of the family, they see a genetic counselor. A chromosome analysis reveals that, whereas the woman has a normal karyotype, the man possesses only 45 chromosomes and is a carrier of a Robertsonian translocation between chromosomes 22 and 13. Q. What types of zygotes will develop when each of gametes produced by the man fuses with a normal gamete produced by the woman?
You are an allele on a single uncondensed chromosome in a Yellowfever-carrying mosquito (Aedes aegypti) diploid cell (2n = 6). Demonstrate in as much detail as possible (1) how you will get to each genetically identical diploid cell of the multicellular offspring; (2) how you will get to the next generation of sexually reproduced progeny. Help, I no understand. Perhaps you will?
2) A. Explain how polyribosomes form. B. Why might you expect the insertion of 3 DNA base pairs to be less disruptive than th deletion of a single base pair? C. Compare and contrast mitosis and meiosis with respect to their genetic outcomes? D. What are the possible consequences of non-disjunction during cell division? E. How does meiosis increase genetic diversity in populations?
A sexually reproducing organism has the following phenotype DdEeAaTt: The D and E loci are on the same arm of a metacentric chromosome in cis configuration. The A locus is on the long arm of an acrocentric chromosome and the T locus is on a telocentric chromosome. There are no other chromosomes. 1. What is the haploid number of this organism? 2. Using diagrams, show a cell at metaphase of mitosis and show the results of mitosis. Ensure you show the location of the gene loci on the different chromosomes.
A diploid species has 3 pairs of chromosomes in its somatic cells. In males, the first pair is large submetacentric[1]; the second is medium acrocentric[2], and the third is small telocentric[3]. In females, the first two pairs are like those of the males while the third is large metacentric[4][5], with satellite4 Illustrate the karyograms (drawing/picture of the chromosome) of the following: A triploid cell in females tetrasomic cell in males tetraploid cell in females [1] submetacentric --centrosome is just above the middle of the chromosome [2] acrocentric --centrosome is much higher location than submetacentric so that the “p” arm of the chromosome is much shorter than the q arm [3] telocentric --the centromere is at the end of the chromosome [4] metacentric --centrosome is in the middle of the chromosome; thus the “p-arm” and the “q-arm” or both arms of the chromosome are equal in length [5] satellite-a constriction in an arm of a chromosome, aside…
Consider and individual with 3 pairs of homologous chromosomes labeled as: A/a B/b D/d(where the slash line separates one chromosome from its homologues). How many differentmeiotic products (sperm or egg) can this individual produce? What are these?
During a practical, a group of biology students are tasked to study the cell cycle of an insect. This insect has the karyotype 2n=6, with genotype Aa Bb Ee HH. The students must draw a G2 cell about to enter meiosis, using red lines for maternal chromosomes, blue lines for paternal chromosomes and black dots to represent centromeres. The drawing provided by the students is shown below. a) Identify three mistakes the students made when producing this diagram. In your answer only refer to elements already present in the figure. (3) b) This fly is used in a testcross. What is the probability of producing a fly with genotype Aa bb ee Hh?
A somatic cell has the genotype DdEe. All chromosomes in this organism are metacentric. Show metaphase and the results of mitosis if the D and E locus are linked on the same chromosome in trans configuration. A sexually reproducing organism has the following phenotype DdEeAaTt: The D and E loci are on the same arm of a metacentric chromosome in cis configuration. The A locus is on the long arm of an acrocentric chromosome and the T locus is on a telocentric chromosome. 2.1. What is the haploid number of this organism? 2.2. Using diagrams show a ceii at metaphase of mitosis and show the results of mitosis.
Draw relevant schemes of karyotypes for a female with a classical Down syndrome (trisomy 21), indicating number of chromosomes do you expect (list all possible numbers!) in: (PLEASE DONT DRAW ALL 46 CHROMOSOMES THANKS!) 1) this female's somatic cell which just completed mitosis 2) the primary oocyte of this Down female at metaphase stage 3) two gametes that led to the zygote that developed into this Down female Please make a drawing thank you
Match the following: A duplicated chromosome is made of 2.A maternal and paternal chromosome present together, each with two sister chromatids 3.Semi-condensed DNA made up of coiled nucleosomes. 4.Super-coiled DNA strands. 5.Contains only one copy of each chromosome. 6.Name of an error during meiosis resulting in fewer chromosomes than normal in a zygote or individual (2n-1) 7.General term for an error resulting in the incorrect number of chromosomes in a gamete after meiosis 8.A specific version of a gene, such as blue eye colour 9.A region on a chromosome that codes for a protein 10.Region where chromosomes are attached 11.None of the above (should be selected more than once) with monosomy trisomy aneuploidy centromere gene sister chromatids diploid Haploid tetrad telomere Chromosomes Chromatin allele
You are an allele on a single uncondensed chromosome in a Yellow fever-carrying mosquito (Aedes aegypti) diploid cell (2n = 6). Demonstrate in as much detail as possible: (1) how you will get to each genetically identical diploid cell of the multicellular offspring. (2) how you will get to the next generation of sexually reproduced progeny.
Sketch a series of diagrams showing each of the following, making sure to end each series with haploid cells:(a) How a pair of alleles for a single locus segregate in meiosis(b) How the alleles of two unlinked loci assort independently in meiosis(c) How the alleles of two linked loci undergo genetic recombination