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goldfiish [28.3K]
3 years ago
11

A recent study compared the Homo sapiensgenome with that of Neanderthals. The results of the study indicated that there was a mi

xing of the two genomes at some period in evolutionary history. What data were discovered that suggested this conclusion
Biology
1 answer:
MissTica3 years ago
8 0

The question is incomplete. The complete question is:

A recent study compared the Homo sapiensgenome with that of Neanderthals. The results of the study indicated that there was a mixing of the two genomes at some period in evolutionary history. What data were discovered that suggested this conclusion

A) some Neanderthal sequences not found in living humans

B) a few modern H. sapiens with some Neanderthal sequences

C) duplications of several Neanderthal genes on a Neanderthal chromosome

D) some Neanderthal chromosomes that are shorter than their counterparts in living humans

Answer:

B) a few modern H. sapiens with some Neanderthal sequences

Explanation:

The mixing of genomes of two species generally results in shared sequences and some common genetic traits in the descendants of these species. Mixing of genomes of <em>Homo sapiens</em> and Neanderthals would have resulted in the presence of some common gene sequences in their genomes. If the conclusion that the mixing of genomes of these two species has occurred is correct, some of the modern <em>Homo sapiens </em>should have the genome sequences that were otherwise present in the genomes of Neanderthals only but not in that of the <em>Homo sapiens</em>.

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Answer:

Option A, most closely related to mammals

Explanation:

Insects like arthropods and molluscs have an open circulatory system and thus do have a distinguishable heart. Fish has two chambered heart. Reptiles have three chambered heart. Amphibians too have a three chambered heart.  

All mammals and fish have four chambered heart. The right and left sides of the chambers have restricted entry and hence remain intact from each other

Hence, option A is correct

 

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3 years ago
I need help!!! Please
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2 years ago
Two organisms have analogous structures. A student concluded that these organisms must have a common ancestor is the student cor
arsen [322]

Answer:

The student is wrong, just because the analogous structures of any two organism may have the same structure or even have the some relation between there way of operation or functions.

Explanation:

  • <u>Analogous Structures:</u>

As the similarity between two or more different organisms structure or any organ does not means that they have same ancestors or have the common origin from which the evolve into two different species. Now analogous structures are very much similar in there structure physically, but two different organisms may use them for the same function, which is astonishing to see or observe in way different species.

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As the structure of the flipper of a Dolphin has similarity with the phalanges of a human being and with the wings of the bat. As all of them functions for the basic need of movement or locomotion from one point to another. While, all the three species are very much different in there features and are not the same obviously.

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4 0
2 years ago
What is the importance of the nitrogen cycle?
valentinak56 [21]
Plants and animals could not live without nitrogen<span>. It is an </span>important<span> part of many cells and processes such as amino acids, proteins, and even our DNA. It is also needed to make chlorophyll in plants, which plants use in photosynthesis to make their food and energy.  hope this helps!</span>
6 0
2 years ago
Wich is a nitrogen base that is located within an RNA molucule, but NOT within a DNA molecule?
gtnhenbr [62]

<u>Answer:</u>

The correct answer is Uracil which is nitrogen base found in RNA.

<u>Explanation:</u>

Uracil is a nitrogenous base which is located within an RNA molecule but not within a DNA molecule.

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3 years ago
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