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UNO [17]
3 years ago
14

scientists have used mtDNA as a molecular clock to trace human evolution and early migration routes explain why mtDNA would be m

ore useful in this research than rRNA
Biology
1 answer:
melisa1 [442]3 years ago
5 0
An unknown mtDNA sample sample is matched to a sample of mtDNA that was found at the crime scene.<span> This is how mitochondrial DNA (mtDNA) typing is used in forensic science.</span>

<span>Unlike nuclear DNA typing, mtDNA isolation is quite easy because its number is quite large. mtDNA copies rang from 100 to 10,000 per cell. It is also more stable and stronger than the nuclear DNA; that is why even unsolved cases from years ago use mtDNA typing as reference for possible conclusion.</span>
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As part of their normal function, many proteins bind to dna briefly and then release it again. which types of bonds might be inv
STatiana [176]
The type of bonds that are involved in these transient protein - DNA interactions include: IONIC BOND, VANDER WAAL FORCES AND HYDROGEN BOND.
Protein - DNA interaction occur when a protein bind to DNA molecule; this reaction usually occur in order to regulate the function of DNA, especially that of expression of genes. Protein interaction with DNA may be specific or non specific.
7 0
3 years ago
In humans, to fold the tongue is a dominant trait (L), and the straight tongue is the recessive trait. What are the probabilitie
kaheart [24]

The given question is incomplete as the genotype of the parents is not given, so the answer is providing in the followings case:

1. dominant parent and recessive parent

2. heterozygous parents

Answer:

1. dominant parent and recessive parent:

dominant parents can be represented by LL and recessive parent is represented by ll, so the gametes would be L, L and l, l.

so,

 L    L

l  Ll   Ll

l  Ll   Ll

so there are all offspring in heterozygous condition as we known one or two dominant allele masks the recessive allele for the trait so 100% offspring can fold their tongue.

2. heterozygous parents

In this case, parents have Ll genotype and gametes would be L and l for each parent so,

    L    l

L   LL  Ll

l    Ll    ll

In this case, one is pure dominant and two heterozygous whereas only one is recessive so, the phenotype of offspring that cant fol the tongue would be:

3/4 = 75%

6 0
3 years ago
An energy pyramid is shown below. which level of the pyramid will be able to support the greatest number of organisms?
Marta_Voda [28]
The answer is the one which contains plants
6 0
3 years ago
Name the three types of population distribution, describe each, and explain the conditions that govern each.
mel-nik [20]

Answer:

Three types of population distribution:

Clumped.

Random.

Uniform.

Explanation:

1. Clumped:

This is the most common pattern of population dispersion.

organisms are clustered together in a group.

This may reflect the patchy distribution of resources in the environment.

2. Random:

This is a typical distribution where individuals do not interact strongly.

The organism has unpredictable distribution.

3. Uniform:

This is the typical environment where individuals compete with each other for scarce resources like water in the desert.

organisms are evenly spaced over the area they occupied.

This was previously answered by "Anshults", https://brainly.in/profile/Anshults-4402044

So all credit to them :)

6 0
3 years ago
Read 2 more answers
Which suspect’s DNA matches that found at the crime scene? Does this automatically mean that the suspect is guilty? 2. What poss
igomit [66]

Answer:

RFLP analysis of genomic DNA is facilitated by Southern blot analysis.   After electro-phoresis, DNA fragments in the gel are denatured by soaking in an alkali solution.  This causes double-stranded fragments to be converted into single-stranded form (no longer base-paired in a double helix).  A replica of the electrophoretic pattern of DNA fragments in the gel is made by transferring (blotting) them to a sheet of nitrocellulose or nylon membrane. This is done by placing the membrane on the gel after electro-phoresis and transferring DNA fragments to the membrane by capillary action or electro-transfer.  DNA, which is not visible, becomes permanently adsorbed to the membrane, that can then be manipulated easier than gels.

Explanation:

4 0
3 years ago
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