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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Concept explainers
Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
Question
Assume there is a single crossover event on the long chromosome between the A and D genes. Please show the process of meiosis through Prophase 2
Transcribed Image Text:Cell Membrane
Metaphase
B
d
Genotype
Prophase I
Nuclear Membrane
Either
DNA Synthesis
Equatorial Plate
Or
Metaphase I (first alternative) Metaphase I (second alternative)
At this stage, both alternatives should show the same crossover event on the long
chromosome. The difference between the two will be independent assortment
with the short chromosome. The use of colored pencils helps to demonstrate both.
Transcribed Image Text:Anaphase I (first alternative)
↓
Telophase I (first alternative)
C
Prophase II (first alternative)
Anaphase I (second alternative)
Telophase I (second alternative)
Prophase II (second alternative)
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