BIOLOGY:HOW LIFE WORKS (LL)-PACKAGE
3rd Edition
ISBN: 9781319369163
Author: Morris
Publisher: Macmillan Higher Education
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Chapter 11.4, Problem 12SAQ
Summary Introduction
Meiosis is a type of cell division. It contains two successive cell division such as meiosis I and meiosis II. Each division results in two daughter cells, thereby, meiosis finally produces four daughter cells. Meiosis is involved in the production of gametes. During fertilization, two gametes are fused and produce a zygote, a single cell. Errors during the process of meiosis I or II can result in extra or missing chromosomes in cells. These errors occur infrequently and most of them may produce lethal effects. Nondisjunction in meiosis may lead to extra or missing chromosomal DNA.
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The Snapdragon is a popular garden flower that comes in a variety of colours, including red, yellow, and orange. The genotypes and associated phenotypes for some of these flowers are as follows:
aabb: yellow
AABB, AABb, AaBb, and AaBB: red
AAbb and Aabb: orange
aaBB: yellow
aaBb: ?
Based on this information, what would the phenotype of a Snapdragon with the genotype aaBb be and why?
Question 21 options:
orange because A is epistatic to B
yellow because A is epistatic to B
red because B is epistatic to A
orange because B is epistatic to A
red because A is epistatic to B
yellow because B is epistatic to A
A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation?
The cell membranes are more resistant than normal.
An isotonic solution had been added instead of water.
A solution of 0.1 M NaCl had been added instead of water.
Not enough water had been added to the red blood cell pellet.
The man had sickle-cell anaemia.
A sample of blood was taken from the above individual and prepared for haemoglobin analysis. However, when water was added the cells did not lyse and looked normal in size and shape. The technician suspected that they had may have made an error in the protocol – what is the most likely explanation?
The cell membranes are more resistant than normal.
An isotonic solution had been added instead of water.
A solution of 0.1 M NaCl had been added instead of water.
Not enough water had been added to the red blood cell pellet.
The man had sickle-cell anaemia.
Chapter 11 Solutions
BIOLOGY:HOW LIFE WORKS (LL)-PACKAGE
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