Q1. Consider a cell that is 2n = 6. The cell is heterozygous for gene A, homozygous dominant for gene B and homozygous recessive for gene D. Gene A and gene B are on the same chromosome, but gene D is on a different chromosome to either A or B. Draw this cell at the following 3 stages: (Note: Make sure it is clear which chromosomes are homologous pairs! Don't forget to include spindle fibers and centrioles). a) Anaphase of mitosis (3 points) b) Anaphase I of meiosis (3 points) c) Anaphase II of meiosis (3 points) d) A nondisjunction event results in the fusion of chromosomes 1 and 2. However, the resulting gamete fertilizes a normal oocyte. What is the chromosome number of the gamete and resulting embryo? (1 point)
Q1. Consider a cell that is 2n = 6. The cell is heterozygous for gene A, homozygous dominant for gene B and homozygous recessive for gene D. Gene A and gene B are on the same chromosome, but gene D is on a different chromosome to either A or B. Draw this cell at the following 3 stages: (Note: Make sure it is clear which chromosomes are homologous pairs! Don't forget to include spindle fibers and centrioles). a) Anaphase of mitosis (3 points) b) Anaphase I of meiosis (3 points) c) Anaphase II of meiosis (3 points) d) A nondisjunction event results in the fusion of chromosomes 1 and 2. However, the resulting gamete fertilizes a normal oocyte. What is the chromosome number of the gamete and resulting embryo? (1 point)
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,...
Related questions
Question
None
Transcribed Image Text:Q1. Consider a cell that is 2n = 6. The cell is heterozygous for gene A, homozygous dominant
for gene B and homozygous recessive for gene D. Gene A and gene B are on the same
chromosome, but gene D is on a different chromosome to either A or B. Draw this cell at the
following 3 stages: (Note: Make sure it is clear which chromosomes are homologous pairs!
Don't forget to include spindle fibers and centrioles).
a) Anaphase of mitosis (3 points)
b) Anaphase I of meiosis (3 points)
c) Anaphase II of meiosis (3 points)
d) A nondisjunction event results in the fusion of chromosomes 1 and 2. However, the
resulting gamete fertilizes a normal oocyte. What is the chromosome number of the
gamete and resulting embryo? (1 point)
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 3 images
Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education