Answer:
Explanation:
Placoderms were the first jawed fish; their jaws likely evolved from the first of their gill arches. in spanish
placodermos
A translocation that moves a gene from an area of euchromatin to heterochromatin would typically cause a(n) reduction in the expression of the gene.
<h3>What is euchromatin?</h3>
- A kind of chromatin that is sparsely packed, enriched in genes, and frequently engaged in transcription is called euchromatin.
- Contrasting with heterochromatin, which is compact and less accessible for transcription, is euchromatin.
- The human genome has 92% euchromatic DNA.
<h3>What is heterochromatin?</h3>
- Heterochromatin, often known as condensed DNA or densely packed DNA, has many different types.
- Between constitutive heterochromatin and facultative heterochromatin, these variations fall on a spectrum. Both contribute to how genes are expressed.
- Eukaryotic genomes contain heterochromatin, which serves a variety of purposes including regulating gene expression and preventing DNA replication and repair.
Learn more about euchromatin here:
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Radioactivity was discovered in 1896
I think the answer is D. Circulatory because this system helps to get the absorbed nutrients throughout the whole body
