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,...
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![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)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F93a00051-2960-4f4f-a1a7-9da8457f0d87%2F07a660f6-7709-4ee5-82df-507760bfa26e%2Ftl9q1zv_processed.jpeg&w=3840&q=75)
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)
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