What property of dna makes it possible for a probe to find a single-stranded dna target gene?

Biology

2 answers:

MaRussiya [10]3 years ago

8 0

Answer:

Complimentary base pairings

zalisa [80]3 years ago

5 0

Answer:

-Complementary base pairing

Explanation:

DNA probes can be defined as fragments of single stranded DNA molecules, which are used to to detect the presence of target DNA sample. The nucleotide sequence in probes is complementary to the nucleotide sequence of target DNA.

Hence, probes detect DNA by hybridizing to single stranded target DNA according to complementary base-pairing rule. Nitrogen bases present in probe and target DNA make hydrogen bonds with each other (adenine binds with thymine and guanine binds with cytosine (and vice versa) and target DNA is detected.

Thus, the correct answer is 'complementary base-pairing.'

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Terry saved some of the tooth-like objects within the hagfish's round mouth to analyze their composition in his mentor's biochem

Triss [41]

Answer:

The correct answer is option a. "scales".

Explanation:

The missing information of this question is the following:

"Terry catches a ray-finned fish from the ocean and notices that attached to its flank is an equally long, snakelike organism. The attached organism has no external segmentation, no scales, a round mouth surrounded by a s*cker, and two small eyes. Terry concludes it is a hagfish."

Gymnophiona is a group of amphibians characterized by having dermal scales as integumentary element. These amphibians are tetrapods and their scales are comprised of several layers of unmineralized collagenous fibers. The skeleton of the hagfish is made entirely of cartilage, therefore it is very likely that the tooth-like objects of hagfish's are made of cartilage, just like the scales of the tetrapod.

7 0

2 years ago

Which best explains why noble gases are chemically unreactive

vesna_86 [32]

<span>They have very stable outer electron shells</span>

3 0

2 years ago

Identify which division had the largest sample size

mafiozo [28]

Attached is the table related to this exercise that I found on the internet.

According to the table, the division with the largest sample was the division II.
Summing up all the individuals from the different divisions we have:
Division I - 22
Division II - 27
Division III - 21
The sample from division II is the largest.