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Scrat [10]
3 years ago
8

The average age at which an infant can sit unattended is approximately __________ months.

Biology
2 answers:
Alika [10]3 years ago
7 0
This varies from baby to baby, but it is approximated to be the ages of 4 to 7 months.
vova2212 [387]3 years ago
6 0

Answer:

5-7

Explanation:

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Answer:

E.

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3 years ago
Please explain the difference between a frameshift mutation and a base substitution mutation.
harina [27]

Answer:

A frameshift changes every codon past it. A base substitution only changes one codon.

Explanation:

DNA is comprised of nucleotides (A, C, T, G) that make up amino acids. Every three bases is called a codon and represents an amino acid.

In a frameshift mutation, a nucleotide is either added or deleted from the sequence. This offsets the entire sequence after it because the reading frame shifts. Here's an example:

ACTGCTATCGTCATC

If another T is added in between the first and second codons, then every codon after will be changed.

ACT>T<GCTATCGTCATC

A substitution mutation is usually less severe, as it only alters one codon in the sequence. These occur when one nucleotide is replaced by another one. Here's an example:

ACTGCTATCGTCATC

Let's say the first G is replaced by a T.

ACT>T<CTATCGTCATC

As you can see, none of the other codons changed.

Typically, a frameshift mutation is considered worse than a substitution mutation.

7 0
3 years ago
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Johanna took her little brother to the playgrond because he likes to swing
Dafna11 [192]

Answer:

the boy is in Kinetic energy

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At the cellular level, cells produce carbon dioxide in the process of cellular respiration.
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What environmental worldview is seen by critics as focused on short-term economic benefits with little regard for long term harm
attashe74 [19]
I believe the answer is the global free-market approach.
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