The answer is D. All living things are made up of cells.
Answer: D. Allow for multiple embryos (In contrast,a simple uterus,like the kind has a single chamber for the development of a single embryo)
Explanation:
the mutation that affect offspring is gene mutation
The rank from most likely to least likely of the one-base point mutations will be: (B) 4, 3, 2, 1
4. deletion mutation within the first exon of the gene.
3. substitution mutation at the second position of a codon in an exon.
2. substitution mutation at the third position of a codon in an exon.
1. insertion mutation deep within an intron.
Insertion mutation can affect the structure but only when present in the axon. Deletion mutation can change the whole reading frame pf the m-nucleotide sequence.
Substitutions can at maximum change one amino acid in the reading frame as one amino acid will be replaced by another. And if the substitutions is at the third place of the codon triplet, chances are that the amino might not even change as one amino acid are coded by more than pone codons.
To know more about substitutions, here
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Answer:
The correct answer is B.
Explanation:
Given the baltimore's scheme which used for virus classifications, the most closely related option of virus to the described polio virus with a single stranded RNA in the question would be retroviruses that require a DNA intermediate.
Because much like the single-stranded RNA viruses, the retroviruses do not contain any DNA but they do have an enzyme named reverse transcriptase which they can use to replicate their RNA into the host cells DNA and use the end product for their benefits. So they both work in similar ways.
I hope this answer helps.