Fruit flies have eight chromosomes in their cells if one of these cells undergoe

Question

Fruit flies have eight chromosomes in their cells if one of these cells undergoes mitosis how many chromosomes will be in each daughter cell? Upon the completion of meiosis how many chromosomes will be in a fruit fly sperm or egg cell? Overexposure to radiation causes mutations in DNA that may result in an abnormally high of mitosis in skin cells, leading to skin cancer. List at least three lifestyle changes that can minimize your risk of developing skin cancer. Explain how cut up DNA into short List at least three different uses for DNA

Explanation / Answer

1. After mitosis the cheromsome number in each daughter cell will be eight. In mitosis the cells devides into two daughter cell but chromosome number remains same. The purpose of mitosis is to make more diploid cells.

b. The purpose of meiosis is to make haploid gametes.The chromosome number after meiosis will half means 4 meiosis is a reductive type of cell division: it results in cells with fewer chromosomes.

2.

A.Seek the shade, especially between 10 AM and 4 PM.

B. Do not burn.

C. Avoid tanning and UV tanning beds.

3.A restriction endonuclease is a bacterial enzyme that cuts dsDNA into fragments after recognizing specific nucleotide sequences known as recognition or restriction site. the term restriction comes from the fact that these enzymes restrict the entry of foreign DNA in the bacteria. Restriction enzymes therefore are believed to be evolved by bacteria to resist viral attack.

4. The uses of DNA fingerprinting

1. Forensic scientist have been able to find missing person.

2. determine whether or not an individual is the parent of a child.

3. Establish beyond reasonable doubt that a persons is guilty for which he or she has been accused.

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