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raketka [301]
3 years ago
13

1. What are point mutations? How do they occur?

Biology
1 answer:
mestny [16]3 years ago
8 0

Answer:

Involve changes in one or few nucleotides/ bases

Explanation:

Point mutations most commonly involve the substitution of one base for another (which changes the complementary base as well in DNA). The term point mutationt also includes insertions or deletions of a single base pair.

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Alyssa investigates properties of matter. The answer to which question would best
timofeeve [1]

Answer:

This question is incomplete as it lacks options, the options are:

A) What is the radius of each particle of the substance?

B) Does the substance contain more than one type of atom?

C) Was a chemical reaction necessary to create the substance?

D) What is the electrical charge of the particles of the substance?

The answer is B

Explanation:

In chemistry, an element is a substance made up of a single type of atom i.e. only one atom of the same type constitutes an element while a compound is a substance that contains two or more different elements. If a compound contains different elements, it means that a compound will certainly contain more than one type of atom.

According to this question, the best question to ask when Alyssa wants to differentiate between an element and a compound is: DOES THE SUBSTANCE CONTAIN MORE THAN ONE TYPE OF ATOM?

- If the answer is yes, the substance is a COMPOUND

- If the answer is no, the substance is an ELEMENT.

6 0
4 years ago
What does the notation Rr mean to geneticists? heterozygous alleles homozygous alleles dominant alleles recessive alleles
aksik [14]

Answer: Option A

Explanation:

The heterozygous allele can be defined as the condition in which the organism has two different alleles of the gene.

It is represented as Rr, means a capital letter and a small letter. This hows that the organism has one dominant gene and one recessive gene in it.

This dominant and recessive condition decides the genotype and phenotype of organism.

6 0
3 years ago
Read 2 more answers
Please help with this​
a_sh-v [17]

Answer:

m=(y2-y1)/(x2-x1)

m=(2-0)/(0-(-2))

m=2/(0+2)

m=2/2

m=1 ==> Gradient of graph

x-int: (-2, 0)

y-int: (0, 2)

Explanation:

m=(y2-y1)/(x2-x1)

m=(2-0)/(0-(-2))

m=2/(0+2)

m=2/2

m=1 ==> Gradient of graph

x-int: (-2, 0) ==> When y=0

y-int: (0, 2) ==> When x=0

6 0
2 years ago
Heeeeeelp please <br><br><br><br>Answer and I will give you brainiliest <br>​
iragen [17]

Explanation:

Such an offspring would have the genotype YY, which are the dominant alleles that code for yellow colour in bananas.

In the Punnett's Square, none of the offspring have YY genotype. Hence the answer is 0%.

3 0
3 years ago
Which is the first indicator of an infection in the body?
gayaneshka [121]
Which is the first indicator of an infection in the body?
<span>
B. an increase in the number of WBCs in the blood</span>
3 0
3 years ago
Read 2 more answers
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