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Serjik [45]
3 years ago
15

Briefly explain how DNA profiling is used to identify individuals.

Biology
1 answer:
Ne4ueva [31]3 years ago
3 0
A sample of DNA is taken from blood of saliva. PCR makes lots of copies, or amplifies the DNA. We then add restriction enzymes to cut the DNA at palindrome sequences. We then run the DNA through gel Elecrophoresis. Each person has unique short tandem repeats that cause a unique number of cuts by the restriction enzyme. These cuts are separated by size on gel electrophoresis, so no two people have the exact same pattern. We can compare individuals banding patterns to what is found at a crime scene, taken in previous samples, in a baby, and the sample that matches all the banding patterns will be the individual.
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All cells within an organism with have the same number of chromosomes except the gemete? True or false
Nana76 [90]

Answer: false

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In facilitated diffusion, what is the role of the transport protein? (concept 7.3)
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In facilitated diffusion, what is the role of the transport protein? ... Transport proteins provide the energy for diffusion of the solute. C) Transport proteins provide a protein<span> site for ATP hydrolysis, which facilitates the movement of a solute across a membrane.</span>
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5 0
3 years ago
Genes a and b are 10 map units apart, b and c are 20 map units apart, and a and c are 30 map units apart. If a triple heterozygo
Stells [14]

Answer:

20 ( B )

Explanation:

Given data:

a and b are 10 map units apart

b and c are 20 map units apart

a and c = 30 map units apart

<em>condition </em>; Triple heterozygote testcrossed

number of progeny = 1000

<u>Determine the number of double crossover result </u>

P( crossover between a and b ) = 10/100 = 0.1

P( crossover between b and c ) = 20/100 = 0.2

p( double crossover ) = 0.1 * 0.2 = 0.02

hence number of double crossovers = number of progeny * 0.02

                                                              = 1000 * 0.02 = 20

6 0
3 years ago
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