INTRODUCTION TO MICROSCOPY CELL BIOLOGY
DIFFERENTIATED CELL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Expression of genes that regulate fur color in Alaskan wolves is influenced by environmental factors such as temperature.
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Alaskan wolves are healthier in the winter.
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The fur appears brown because the wolves roll in brown dirt during the summer months.
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The reflection of sunlight in the summer causes the wolves’ fur to appear brown.
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Detailed explanation-1: -The arctic fox has two traits for fur color that are determined at birth. Gene expression for fur color is regulated by temperature. Human bone, muscle, and nerve cells all contain the same number of chromosomes with the same complement of genes.
Detailed explanation-2: -When the target DNA is found, Cas9 – one of the enzymes produced by the CRISPR system – binds to the DNA and cuts it, shutting the targeted gene off. Using modified versions of Cas9, researchers can activate gene expression instead of cutting the DNA. These techniques allow researchers to study the gene’s function.
Detailed explanation-3: -Dexoyribonucleic Acid, or DNA, controls the way cells function. It also determines what type of specialized cells will be made. Stem cells are cells that have the ability to become any type of specialized cell in the body.