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almond37 [142]
3 years ago
9

Which of the following a synapomorphy linking dinosaurs and birds?

Biology
1 answer:
Readme [11.4K]3 years ago
6 0

Answer:

d. furcula

Explanation:

Furcula

Furcula is a synapomorphy linking dinosaurs and birds .

The furcula is the structure formed by midline fusion of clavicles and this very  element is unique in the theropods as well . And is the most crucial for understanding the link between birds and the theropods .

The first suggestion was by Huxley in 1868 , and in 1870 , the key component of the debate is the presence of Frucula .

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Answer:

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In the beginning of the meiosis process, when genes are present in the same chromosomes but very far, they undergo indepedent assort due to homologous recombination and the random exchnage of matching fragment in  homologous chromosomes takes place. During the crossing over there are very less chances that all types of gametes are produced accurate frequency.

Hence, the correct answer is 4.

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