Which aspects of cell structure best reveal evolutionary unity? what are some examples of specialized mods?

1 answer:

5 0

1. The genetic material is a good evidence of evolution because it's been conserved through time but with some slight differences.
Another important aspect is the mitochondria. The mitochondria resulted from a symbiotic relationship between bacteria and pre-eukaryotes. Explaining why the mitochondria looks like a bacteria and has bacterial DNA.

2. specialized cellular modifications:

There are cellular modifications happening in multicellular organisms. That means, they have different types of cells, with different functions and will express different characteristics. For example:
- Nerve cells have dendrites which is important to receive the electrical signal from another neuron, other cells don't have that.
- Sperm cells have a tail ( flagellum) in order to swim through the vagina and no other cell has that.

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If cysteine is specified by the codons UGC and UGU, what are the anticodons present on tRNAs that carry cysteine?

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AGC and ACA

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Sunlight exposure has stronger effect on skin cancer risk in fair-skinned humans than in individuals with darker skin. This is a

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Answer: Option D.

Genotype by environment interaction.

Explanation:

Genotype by environment interaction refer to a situation where two different genotypes react differently in an environment. Light skinned humans are at greater risk of skin cancer because they lack melanin which the dark people have and this melanin protect the skin from sun.

All the choices are correct. Differences in the norm of reaction I.e they react different way.

Epistasis is when the effect of a gene suppress the other.

Pleiotrophy is when a gene influence another genes phenotipically. These are all genotype enviromr interaction.

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