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3 years ago

How can dna be useful in phylogeny?

Biology

1 answer:

Tpy6a [65]3 years ago

6 0

Answer:

If DNA is shared it helps put the pieces of the tree together.

Explanation:

hope this helps luv

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Which of the following best describes similarities between archae and eubacteria?

ra1l [238]

The answer would be A

5 0

3 years ago

small group of 100 people decide to isolate themselves from the world and move to a small and remote deserted island. Out of thi

irina [24]

Answer:

Frequency of p $= 0.684$

Frequency of p $= 0.316$

Number of individuals with homozygous dominant (AA) $= 47$

Number of individuals with heterozygous (Aa) $= 43$

Number of individuals with homozygous recessive (aa) $= 10$

Explanation:

Out of 100 people, 10 have albino skin (aa)

So, the frequency of homozygous recessive individuals $(q^{2})$ is $\frac{10}{100} = 0.1$

Now, q will be

$= \sqrt{q^{2} } = \sqrt{0.1} \\= 0.316$

As per Hardy Weinberg's equation -

$p + q = 1$

Substituting the value of q in above equation, we get -

$p + 0.316 = 1p = 1 -0.316\\p = 0.684$

Now the frequency of homozygous dominant (AA) will be

$p^{2} = 0.684^{2} \\= 0.467$

Hence, out of 100 people $0.467 * 100 = 46.7 or 47$ people are homozygous dominant (AA)

Like wise out of 100 people $0.1 * 100 = 10$ people are homozygous recessive (aa)

As per As per Hardy Weinberg's equation-

$p^{2} + q^{2} + 2pq = 1\\$

Substituting the values in above equation, we get -

$0.467 + 0.316 + 2pq = 1\\2pq = 1 -( 0.467+ 0.1)\\2pq = 0.433$

So, out of 100 people $0.433 * 100 = 43.3 or 43$ people are heterozygous (Aa)

7 0

3 years ago

Is the amplitude of each wave (P, ORS, T) always the same in different cardiac cycles?

Citrus2011 [14]

No the amplitude of each waves are different on different cardiac cycles.

<u>Explanation:</u>

The PQRST waves are used to represent the atrial and ventricular depolarization and repolarization. These waves are reflected in ECG.
In this as the series, p occupies the first place then QRS complex and at last T wave. In the QRS wave complex, R wave is said to be the largest wave.
The direction and amplitude of r wave depend on the electrical picture. The R wave represents the ventricles depolarization so it is the largest wave.

4 0

3 years ago

Please helpppp meee I cant faillllll:(

marissa [1.9K]

Answer:

cysteine

Explanation:

The anticodon for ACA is UGU

in the left column find the U. From the top column find the G. From the right column find the last U. The amino acid at that location is cysteine

3 0

2 years ago

Really need big help on these questions please

vampirchik [111]

Answer: for problem 1

Explanation: A,D,F,G

7 0

2 years ago

How can dna be useful in phylogeny? ​

How can dna be useful in phylogeny?