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Vadim26 [7]
3 years ago
8

The questions below refer to the 1858 publications by Darwin and Wallace that first announced their theory of evolution by natur

al selection.
Darwin states, "Multiform[i.e. Various]difficulties will occur to every one,with respect to this theory." List two potential difficulties that might have troubled Darwin’s contemporaries.
Biology
1 answer:
VladimirAG [237]3 years ago
7 0

Answer:

The two potential difficulties that might have troubled Darwin’s contemporaries are:

1. Lack of transitional forms

2. Shortage of time for the varying forms to evolve.

Explanation:

Two conceivable difficulties that might have given Darwin’s contemporaries some tough work is the timeline given for evolution. This is due to the proposed age of the earth at the time of this study and the confounded numbers of individuals going through evolution.

This results from Darwin highlighting these difficulties in his essay.

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Answer:

The correct answer will be option- synaptonemal complex.

Explanation:

The tetrad arrangement of the genetic material in an organism is mediated by a highly conserved structure known as the synaptonemal complex.  The synaptonemal complex is formed during the prophase I of the meiosis I which attaches the chromatin of the homologous chromosomes.

The synaptonemal complex is a proteinaceous structure which is formed by the two lateral ladders like elements with a central portion composed of the central element. The chromatin gets attached to the lateral elements while the central a portion bridge space between the two ladders thus help in the formation of the tetrad.

Thus, option- synaptonemal complex is the correct answer.

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