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adoni [48]
3 years ago
15

I don’t understand plz help

Biology
1 answer:
Anna [14]3 years ago
3 0
The answer to number four is A
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Which of the following is a producer in the food web shown above?
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Answer: algae

Explanation:

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Unlike other options, algae is the only producer in the food web

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What is recombination and how does it work? is it the same thing as crossing-over? if an organism practiced self-fertilization,
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Recombination is the method by which organisms can randomly assort their genotypes amongst each other to create offspring with a different haplotype than either of its parents. This can be done by either copying sequences from one homologous chromosome to another (no physical exchange) or crossing over (physical exchange. 
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Self fertilizing organisms typically do not produce offspring that are genetically identical. However, this has an inbreeding effect on its offspring, since it is recombining from the same genotype and so has a higher chance of producing homozygous offspring. This is very detrimental for mammals and some eukaryotes, but in some other organisms such as bacteria, homozygosity is typically not an issue.
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