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Andrej [43]
3 years ago
7

Scientist think that all of life on earth originated from which type of organism?

Biology
1 answer:
almond37 [142]3 years ago
7 0
They think that people started as a fish and there was a resolution into a bigger fish then into a land creature then into a monkey then into a man. They think that the earth was a little rock at the beginning but then other rocks joined it and it became 1 big planet. But this is just what they think.
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The principal advantage of asexual reproduction is that the organism does not have to waste time or energy looking for a mate.
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Reaching down to pet your dog is a voluntary action communicated to your muscles via the _____ nervous system.
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Reaching ...............via the SOMATIC nervous system.
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What does LOL mean ?
hammer [34]

Answer:Laugh Out Loud

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Imagine that part of a population of South American finches is blown by a storm onto an island far offshore and manages to survi
lina2011 [118]

Answer: The observation "A" leads us to conclude that the finches populations are from two different species

Explanation:

According to the biological concept of species, <em>a set of individuals are from the same species if they are able to reproduce and leave fertile offspring</em>. This is key so one species can be successful and perpetuate through time. If they cannot leave descendants, then the species will be extinct. However, it’s possible that two individuals from different species mate and have descendants, but they cannot leave fertile offspring. When they are from different species, the offspring will be sterile and it is called a hybrid.  

In the case of the South American finch, the island's finch population and mainland's finch population belong to different species because their offspring is sterile. To have different features, as different feather's color, or to have other dietary preference is not enough to say that they are different species. This is because within the same species, individuals can have variations. For example, we can different eye color and belong to the same species.

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3 years ago
A man and his wife are having trouble having a baby. Using modern technologies, the woman's eggs are removed, fertilized with he
iVinArrow [24]

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Color blindness is a common hereditary condition which means it usually passes from parents. Red green color blindness is passed on from the mother to the son.

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The mother of the child had a recessive allele which she transferred into her son. As it is sex inherited disease the son is affected by gene carried from mother.

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