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miskamm [114]
3 years ago
14

Describe the process that results in the formation of a tetrad.

Biology
1 answer:
goldenfox [79]3 years ago
8 0

Answer:

A tetrad is a four part structure formed during the prophase I of meiosis I which is formed by the homologous chromosomes which is composed of two identical chromatids.

The tetrad formation takes place when a proteinaceous meiosis-specific nuclear structures called synaptonemal complex is formed between two homologous chromosomes which mediates the tight associations of the  homologous chromosomes.

The synaptonemal complex consists of two ladder like lateral elements which attaches the chromatin of the homologius chromosomes. The central region of the synaptonemal complex is composed of the transverse filaments and the central element which bridge the space between the the lateral elements.

This attachment of the chromatin to the synaptonemal complex mediates the chromosome pairing and form tetrad.

D

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Which level has the most number of organisms but the least specific characteristics?
IgorLugansk [536]

Answer:

Kingdom

Explanation:

Out of all the taxonomic categories, the Kingdom is the least specific, which means it has the least filters.

I like to think of taxonomic categories as filters/sieves. If you put your animals through the Kingdom filter, then all the animals are in that category. if you have a finer sieve, then less animals get through, this goes down all the way to the most specific which is Species.

Hope this helps!

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Amino acids are building blocks of which macromolecule?
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The correct answer is d
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when excess fertilizers wash off of the nearby farms and into the lake, they become food for the algal blooms that can plague the lake in the summer. So, reducing fertilizer use and preventing runoff directly into the lake would be one way of reducing eutrophication.

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The components that make up the genetic code are common to all organisms. If a segment of a gene contains 27 nucleotides, none o
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9 amino acids

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A segment of a gene that has 27 nucleotides will code for<u> 9 amino acids.</u>

<em>Each codon on the gene potentially represents an amino acid and a codon is made up of 3 nucleotides each. Hence, in order to find out the total number of amino acids that a gene segment with 27 nucleotides can code for, the number of nucleotides should be divided by 3.</em>

    number of amino acids = number of nucleotides/3

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Which of the following causes day and night to occur?
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