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harina [27]
3 years ago
5

DNA evidence that is old or in poor condition can sometimes be salvaged and analyzed by using _____.

Biology
2 answers:
Ludmilka [50]3 years ago
8 0
B                                                                                                                                               !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!                 
OverLord2011 [107]3 years ago
4 0

Answer: PCR amplification

Explanation:

If the sample amount of DNA is not enough that any research or experiment can be carried out on it, then polymerase chain reaction can be used to  amplify the amount of DNA.

So, for old and poor DNA which is not present in enough quantity is amplified using this technique. In this technique the number of DNA is amplifies exponentially.

So, the correct answer is Option A

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Which of the following genotypes for blood will show codominance?
ycow [4]

Your answer is B

When the F1 generation exhibits both the parental characters, this is called codominance. The offspring will be a combination of both the parent. The ABO blood group system is one of the best examples of codominance. There are different types of red blood cells such as A, B, AB and O with or without the Rh factor.

Sure hope this helps

3 0
2 years ago
List and describe the 3 roles of DNA
Allushta [10]
Three roles of the DNA molecule in heritage are in storage, copying and transmitting genes.

A-DNA: It is a right-handed double helix similar to the B-DNA form. ...
B-DNA: This is the most common DNA conformation and is a right-handed helix. ...
Z-DNA: Z-DNA is a left-handed DNA where the double helix winds to the left in a zig-zag pattern.

8 0
3 years ago
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marshall27 [118]
The correct answer is absence of jaws.
Lampreys and hagfish are in the class Agnatha, they are jaw-less fish. The members of the agantha class are probably the earliest vertebrates. Scientists have found fossils of agnathan species from the late Cambrian period that occurred 500 million years ago. 

5 0
3 years ago
A dominant mutation in Drosophila called Delta causes changes in wing morphology in Delta/+ heterozygots. Homozygosity for this
strojnjashka [21]
I don't know I just want
6 0
3 years ago
The anterior pituitary receives hypothalamic input through the portal blood supply. what is the advantage of this type of anatom
kotegsom [21]

The advantage of this type of anatomical relationship is that this enables the pituitary to receive signals before sending hormones to the rest of the body through the blood.

The anterior pituitary, a significant component of the endocrine system, is the glandular anterior lobe that, along with the posterior lobe (also known as the posterior pituitary or neurohypophysis), constitutes the pituitary gland (hypophysis).

Stress, growth, reproduction, and lactation are just a few of the physiological activities that the anterior pituitary controls.

Blood tests that assess hormone levels are frequently used to determine if the anterior pituitary and the organs it controls are functioning properly.

The hypothalamus-hypophyseal portal veins deliver hypothalamic releasing and inhibitory hormones directly to the anterior pituitary gland.

Certain hormones from the hypothalamus bind to receptors on particular anterior pituitary cells, controlling how much of the hormone they generate is released.

Learn more about pituitary gland here brainly.com/question/1372599

#SPJ4

4 0
1 year ago
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