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Paraphin [41]
3 years ago
14

Determine whether the statements about DNA are

Biology
2 answers:
vekshin13 years ago
7 0

1. true

2. false

3. false

Katen [24]3 years ago
6 0

This is the correct answer

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Draw a DNA molecule that has five randomly spaced restriction sites for a spedific palindrome. How many fragments would be produ
Bond [772]

Answer:

Figures attatched

Explanation:

1. Restriction enzymes cut the DNA in specific places of a specific sequence. Each restriction enzyme has different sequences of recognition.

2. Palindromic sequences are sequences that can be read the same in both senses (3' and 5'), for that reason restriction enzymes can cut both DNA strands

Now, for the first image: if a molecule has 5 restriction sites that are known for a single restriction enzyme, the enzyme will cut the DNA 5 times. If you see the image, the number of fragments is the number of restriction sites +1. In this case, it is 5+1=6 DNA fragments.

In the case of two different palindromic sequences, two different restriction enzymes recognize different sequence. If just one enzyme is present, the only cutting site will be the one that has the palindromic sequence recognizable. So, the number of fragments will be 1+1=2 DNA fragments (figure 2)

7 0
3 years ago
HELP ME!! PLEASE I'LL GIVE A LOT OF POINTS!! What are the 5 steps to the Scientific Method in order?
gulaghasi [49]

1. Make an observation.

2. Ask a question.

3. Form a hypothesis, or testable explanation.

4. Make a prediction based on the hypothesis.

5. Test the prediction.

7 0
3 years ago
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Chemical substances that organism require to live
Arisa [49]
Oxigen ,nitrogen ,carbon,and hydrogen.
5 0
3 years ago
One should inhale when muscles are relaxed and exhale when initiating the lifting or push-off action in resistance training.
Lynna [10]
If this is a true or false question, then the answer is true.
8 0
3 years ago
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​In garden peas, tall (T) vine is dominant over short (t) vine, and round pea pod (R) is dominant over wrinkled pea pod (r). Cro
Aleksandr [31]

Answer:

Explanation:

Given:

Traits

T (tall, dominant) and t (short)

R (round, dominant) and r (wrinkle)

Crossing parents

<u>hetero-zygous. tall wrinkled (</u><u>Ttrr</u><u>)</u>

phenotype tall is given hetero-zygous., so Tt

phenotype wrinkled is recessive, so must be homo-zygous rr

<u>Foiled genotypes</u> (Tr, tr, each with 50%)

<u>short hetero-zygous. round (</u><u>ttRr</u><u>)</u>

phenotype short is recessive, so homo-zygous rr

phenotype round is given heteroz. so Rr

<u>Foiled genotypes</u> (tR, tr, each with 50%)

Offsprings on a 4x4 punnett square

See diagram

6 0
2 years ago
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