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likoan [24]
3 years ago
9

HELP HELP HELP PLS

Biology
1 answer:
Elenna [48]3 years ago
8 0

Answer:

do. contains radioactive DNA

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The fact that choanoflagellates and collar cells of sponges resemble each other supports the inference that ________. Group of a
antoniya [11.8K]

Answer:

choanoflagellates and sponges are sister groups

Explanation:

The choanoflagellates are small unicellular organisms belonging to the Protista kingdom. These microorganisms are collared flagellates morphologically similar to the choanocyte cells of animal sponges, which have a central flagellum surrounded by a collar of microvilli. In consequence, it has been suggested that choanoflagellates may represent the closest living relatives of primitive metazoans (i.e., they are sister groups to sponges). This hypothesis has recently been supported by both molecular phylogenetic and comparative genomic analyses.

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The order is : interphase, prophase, metaphase, anaphase, telophase & cytokinesis.
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[The recent activities of fossil fuel combustion has had adverse effects on the ozone layer]- B.

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Answer:

True

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2 years ago
Why is a frameshift missense mutation more likely to have a severe effect on phenotype than a nucleotide-pair substitution misse
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Explanation:

A single nucleotide-pair substitution missense mutation causes a change of a single amino acid into another. Aa a result, the produced protein will have an almost normal sequence except for one amino acid.

On the other hand, a frameshift mutation changes the Open Reading Frame (ORF) of the ribosome. The ribosome moves along the mRNA every three nucleotides (codons) and translates them into amino acids that will form the nascent protein. If there is a frameshift mutation (an insertion or deletion of a number of nucleotides not multiple of three) the ribosome will "read" the mRNA differently and will identify different codons than the wild-type sequence, so a large number of amino acids will be different in the mutated protein.

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