Consider the true diploid plant cell (2n=4) below. The paternally derived blue chromosomes are of two types, metacentric and acrocentric. These chromosomes contain the same gene pattern and structural features as the maternally derived purple chromosomes. Consider two genes A and B which are found on the metacentric and acrocentric chromosome pairs, respectively. Assume the father passed on 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 on the left. 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. XX

Consider the true diploid plant cell (2n=4) below. The paternally derived blue chromosomes are of two types, metacentric and acrocentric. These chromosomes contain the same gene pattern and structural features as the maternally derived purple chromosomes. Consider two genes A and B which are found on the metacentric and acrocentric chromosome pairs, respectively. Assume the father passed on 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 on the left. 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. XX

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter3: Transmission Of Genes From Generation To Generation

Section: Chapter Questions

Problem 27QP

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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.
Consider the true diploid plant cell (2n=2x=6) below wherein the light blue chromosomes A, B, C (from largest to smallest) are paternally derived. These chromosomes contain the same gene pattern and structural features as maternally-derived purple chromosomes A’, B’, and C’, respectively. Draw and label the chromosomes as observed in the following stages Anaphase (c.1), Anaphase I (c.2), and Anaphase II (c.3). Assume no crossing-over events occurred at Meiosis.
Consider a cell with 2 pairs of homologous chromosomes where Chromosome 1 with genes VWXYZ is the homolog of Chromosome 2 with genes vwxyz while Chromosome 3 with genes PQRST is the homolog of Chromosome 4 with genes parst. If a reciprocal translocation occurred between Chromosome 1 YZ genes and Chromosome 3 ST genes, give the following gamete types produced after meiosis: (Answer in Arabic numbers only) 1. Gamete/s with non-recombinant chromosomes 2. Gamete/s with 1 recombinant chromosome 3. Gamete/s with 2 recombinant chromosomes 4. Gamete/s with gene duplications 5. Gamete/s with gene deletions 6. Gamete/s with 2 normal chromosome sequences 7. Gamete/s with 1 normal chromosome sequence 8. Gamete/s with balanced translocation 9. Gametes/ with all dominant genes 10. Gamete/s with all recessive genes 11. Gamete/s with 10 different genes 12. Gamete/s with TSXWV genes 13. Gamete/s with vwxyz genes 14. Gamete/s with pqrst genes 15.Gamete/s with PORYZ
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