Autosomal homologous chromosomes A. have identical gene locations and alleles B. are joined at the centromere C. consist of a copy of a paternal and a maternal chromosome D. are the same size but different shape
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- A gene has 3 alleles. How many different genotypes are possible in this locus in a diploid organism?Consider the true diploid plant cell (2n=4) below. The paternally derived blue chromosomesare of two types, metacentric and acrocentric. These chromosomes contain the same gene pattern andstructural features as the maternally derived purple chromosomes. Consider two genes A and B whichare found on the metacentric and acrocentric chromosome pairs, respectively. Assume the father passedon A and B alleles, and the mother passed on a and b alleles. a. Show the possible loci of these genes (specify alleles) on the image. Label both sister chromatids in each chromosome. (Note: Sister chromatids are products of replication.)b. Draw the four possible gametes formed after meiosis assuming there was no crossing over. Label the gene loci.In mice, 2n = 40. If a mouse cell divides by mitosis, it will produce two daughter cells that each have ________ chromosomes. If a mouse cell divides by meiosis, it will produce four daughter cells that each have ________ chromosomes. Type the appropriate number to fill in each blank (e.g., 40).
- Chromosome structural errors can occur during Meiosis which can lead to health disorders. Examine the figure below and select the correct order of error type from left to right in which they appear. duplicati on, translocation, deleti on, inversion duplication, inversion, del etion, translocation O deletion, translocati on, inversion, duplication O translocation, inversion, duplication, deletion inversion, translocation, duplication, deletionA 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.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…
- Nondisjunction which can affect sex chromosomes as well as autosomal chromosomes as a common cause of genetic disorders. Use the space provided to illustrate the process of nondisjunction with the end result being that one cell exhibits in the monopsony me while other one exhibits trisomy. Hint: a sperm will fertilize the egg and add it’s chromosome in the last step)B. A woman is a carrier of a Robertsonian translocation between chromosomes 18 and 21. (i) Her chromosome set with respect to chromosomes 18 and 21 would consist of which specific chromosomes. Please draw a DIAGRAM illustrating these chromosomes as they would appear in their unreplicated state, clearly labeling the chromosomes and the chromosome arms present. (ii) If this woman were to have a child with a man who possess a completely normal set of chromosomes, there are six different possible outcomes with respect to the combinations of chromosomes 18, 21, and Robertsonian translocation chromosome that could be present in their offspring. Please indicate the TYPES and NUMBERS of chromosomes of each type present in their potential offspring. You may label the chromosomes as follows: 18 (for chromosome 18), 21 (for chromosome 21) or 18/21 (for the Robertsonian translocation chromosome). Also, please indicate the specific genetic abnormality (if any) that would be present in…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
- What may be expected to happen chromosomally and genetically to: a chromosomes that contains two centromeres.Identify the type of chromosomal aberration described in each of the following cases: a. loss of a chromosome segment b. extra copies of a chromosome segment c. reversal in the order of a chromosome segment d. movement of a chromosome segment to another, nonhomologous chromosomeGenes on the same chromosome tend to stay together during _____ and end up in the same ______. a. mitosis; body cell b. mitosis; gamete c. meiosis; body cell d. meiosis; gamete e. both a and d