BIOL 1406 V.1 PKG >2014<
BIOL 1406 V.1 PKG >2014<
LATEST Edition
ISBN: 9781269881142
Author: Campbell
Publisher: Pearson Custom Publishing
Question
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Chapter 18, Problem 11TYU

(a)

Summary Introduction

To draw: An ‘X’ above enhancers of all the given genes where the activators will bind for the transcription of gene 5.

Concept introduction:

Enhancers are distal control elements located away from the transcribing gene. The control elements of enhancers are short DNA nucleotide sequences. They regulate the expression of specific target genes by binding to the specific transcription factors. These may be either activators (activate transcription) or repressors (repress transcription). Specific activator proteins bind to the control elements of enhancers and promote the transcription.

(b)

Summary Introduction

To draw: A ‘dot’ above the enhancers will bind to green, blue, and orange activators present in a cell and identify which gene would be transcribed.

Concept introduction:

Enhancers are distal control elements located away from the transcribing gene. The control elements of enhancers are short DNA nucleotide sequences. They regulate the expression of specific target genes by binding to the specific transcription factors. These may be either activators (activate transcription) or repressors (repress transcription). Specific activator proteins bind to the control elements of enhancers and promote the transcription.

(c)

Summary Introduction

To identify: The activators that would be present in nerve cells and skin cells to ensure the transcription.

Concept introduction:

Enhancers are distal control elements located away from the transcribing gene. The control elements of enhancers are short DNA nucleotide sequences. They regulate the expression of specific target genes by binding to the specific transcription factors. These may be either activators (activate transcription) or repressors (repress transcription). Specific activator proteins bind to the control elements of enhancers and promote the transcription.

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After you feel comfortable with your counting method and identifying cells in the various stages of mitosis, use the four images below of whitefish blastula to count the cells in each stage until you reach 100 total cells, recording your data below in Data Table 1. (You may not need to use all four images. Stop counting when you reach 100 total cells.) After totaling the cells in each stage, calculate the percent of cells in each stage. (Divide total of stage by overall total of 100 and then multiply by 100 to obtain percentage.)   Data Table 1Stage    Totals    PercentInterphase        Mitosis:        Prophase        Metaphase        Anaphase        Telophase        Cytokinesis        Totals    100    100% To find the length of time whitefish blastula cells spend in each stage, multiply the percent (recorded as a decimal, in other words take the percent number and divide by 100) by 24 hours. (Example: If percent is 20%, then Time in Hours = .2 * 24 = 4.8) Record your data in Data…

Chapter 18 Solutions

BIOL 1406 V.1 PKG >2014<

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