EBK BIOLOGY
EBK BIOLOGY
5th Edition
ISBN: 8220101337627
Author: Maier
Publisher: PEARSON
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Chapter 7, Problem 6LTB

Scientists have recently developed a process by which a skin cell from a human can be triggered to develop into a human heart muscle cell. This is possible because ___________.

  1. most cells in the human body contain the genetic instructions for making all types of human cells;
  2. a skin cell is produced when all genes in the cell are expressed; turning off some genes in the cell results in a heart cell;
  3. scientists can add new genes to old cells to make them take different forms;
  4. a skin cell expresses only recessive alleles, so it can be triggered to produce dominant heart cell alleles;
  5. it is easy to mutate the genes in skin cells to produce the alleles required for other cell type

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Which of the following are ways that two cells with the same DNA might turn into different types of cells? Select all correct answers     Cells can change their DNA over time     Cells could inherit different proteins that affect how the cell develops     Cells could inherit different proteins that affect how DNA is transcribed     Cells can undergo apoptosis
Breast cancer is one of the most common cancers among women. The exact cause of breast cancer is unknown, and very few women will know the reason why they got it. We do know that breast cancer is always caused by damage to DNA. When the cell’s DNA is damaged, mutated cells begin to grow uncontrollably. These abnormal cells can progress into a disease such as breast cancer. Women with certain risk factors are more likely to get breast cancer than others. Some risk factors caused by the environment can be avoided, while others, such as family history, cannot. Below are three different women’s stories and their history in relation to breast cancer. Read each scenario and familiarize yourself with each one. For additional background, you can refer to the following website: http://www.nationalbreastcancer.org. Scenario 1: Jennifer is a 40-year-old Caucasian woman who has a history of breast cancer in her family. Her grandmother and mom both had breast cancer. This prompted Jennifer to have…
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