identify the developmental genes that influence macroevolutionSo.pdf

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identify the developmental genes that influence macroevolution Solution Developmental genes are the regulatory genes that regulate hundreds of genes of development and even a small genetic change in these genes leads to major structural changes in the organisms. These are the genes that distinguish one species from other species. These genes regulate the shape, pattern and type and location of organs of animal body. For ex: Hox genes serve to regulate the formation of particular regions of the body by encoding the related transcription factors and thereby regulate the fate of regions of body. Homeotic genes determine the future development of segments on the basis of the pattern of expression of the segmentation genes before them. Mutation in these genes leds to development of that segment to an adjacent segment, usually anterior to it. These genes are also called memory genes as they regulate developmental fate of a segment which is followed from one cell division to the next..

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Transposons are the segments of DNA that can move around to different positions in the genome of a single cell which may cause mutations or increase/decrease the amount of DNA in the genome of the cell. Theycan potentially play an important role in evolution by copying and transferring other genetic material. There is evidence that transposons and their host genomes have co-evolved over long periods and that transposon activity may increase in response to environmental factors. The movement of transposons is a source that increases genetic variability. In particular, transposons contain regulatory genes that control transposon activity. It is thought that these regulatory genes may evolve to control other genes as well. Solution Transposons are the segments of DNA that can move around to different positions in the genome of a single cell which may cause mutations or increase/decrease the amount of DNA in the genome of the cell. Theycan potentially play an important role in evolution by copying and transferring other genetic material. There is evidence that transposons and their host genomes have co-evolved over long periods and that transposon activity may increase in response to environmental factors. The movement of transposons is a source that increases genetic variability. In particular, transposons contain regulatory genes that control transposon activity. It is thought that these regulatory genes may evolve to control other genes as well..

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Write a JAVA program that reads a stream of integers from a file and prints to the screen the range of integers in the file (i.e. [lowest, highest]). You should first prompt the user to provide the file name. You should then read all the integers from the file, keeping track of the lowest and highest values seen in the entire file, and only print out the range of values after the entire file has been read. Importantly, unlike the previous problem, you can make no assumptions about the contents of the file. If your program cannot read the file, opens an empty file, or encounters a non- integer while reading the file, your program should output that the file is invalid. You have been supplied JUnit tests for several invalid files (e.g. non-existent, empty, non- integer) as well as files that contain only integer values. Solution ReadFileNumbers.java import java.io.File; import java.io.FileNotFoundException; import java.util.Scanner; public class ReadFileNumbers { public static void main(String[] args) throws FileNotFoundException { Scanner scan = new Scanner(System.in); System.out.print(\"Enter the file name: \"); String fileName = scan.next(); File file = new File(fileName); int max = Integer.MIN_VALUE; int min = Integer.MAX_VALUE; if(file.exists()){ try{ Scanner scan1 = new Scanner(file); if(scan1.hasNext()){ while(scan1.hasNext()){ int n= scan1.nextInt(); if(min > n){ min = n; } if(max < n){ max = n; } } System.out.println(\"highest number is \"+max); System.out.println(\"lowest number is \"+min); } else{ System.out.println(\"File is an empty\"); } } catch(Exception e){ System.out.println(\"File is invalid. File has a a non-integers.\"); } } else{ System.out.println(\"File does not exist\"); } } } Output: Enter the file name: D:\\\ umbers.txt highest number is 9 lowest number is -17 numbers.txt 3 4 2 -1 1 5 7 -11 -12 -17 6 9 8.

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