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Jobisdone [24]
3 years ago
5

Why can’t the evolutionary relationships between certain species be explained thoroughly?

Biology
1 answer:
stich3 [128]3 years ago
5 0

the species are poorly related to each other

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What type of fertilization requires a great excess of egg and sperm gametes because most are wasted?
vivado [14]
<span>b.internal fertilization

</span>Sexual reproduction provides genetic variation because the sperm and egg that are produced contain different combinations of genes than the parent organism.  Sexual reproduction involves meiosis which is the process of a cell doubling its DNA, shuffling its genes and then dividing the shuffled DNA among four cells.<span>Each resulting cell, or gamete from meiosis has only half the amount of DNA as the parent cell. So in order to form a new organism, two gametes, sperm and egg, must fuse, further mixing the genes to produce more genetic variation.</span>
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Question: Describe where the single cell gets the information to ultimately produce an adult human?
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It’s true as the chromosome is linked to the DNA
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Summarize: In your own words, describe what heredity is and how it works in mice.
Tasya [4]

Answer:

Heridity is genitically passing on mental and physical traits.

Heridity on mice is the same as it in is humans but you study the coat or flur of them.

Explanation:

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3 years ago
"Scientists will often grow bacteria in prepared petri dishes. In some experiments, the petri dish will also contain paper disks
astra-53 [7]
Since I can't physically insert the appropriate heading, with units, I'll make the data table below by using the information given. 

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Which of the following clades is most likely to survive a series of catastrophic events over time? (1 point)
marishachu [46]
The correct options are as follows:
1. D.
<span>A clade refers to a group of organisms that are made up of evolutionary descendants that originated from a common ancestor. A clade that will survive a series of catastrophic events must be one that is made up of distantly related and diverse species. This is because, those species will have different type of adaptability capacity and will be able to adapt in different ways to the catastrophic events. Due to the differences in their ability to adapt, some of the specie will survive the catastrophic events even if others are wipe out.

2. B.
The mass extinction of one specie usually creates space for another new specie to survive. The new specie that survive the old one may possess the ability to adapt to the event that wipe out the former set of living organisms and thus, the new specie will be able to occupy and reproduce in their new space. Mass extinction is said to occur when the whole population of living organism living in an ecosystem are wipe out as a result of unfavorable conditions.

3. B.
Convergent evolution refers to the independent evolution of similar features in species that arise from different lineages. The species involved usually evolve these traits as a result of having to adapt to similar environments. Convergent evolution usually result in evolution of analogous structures, that is, structures that have similar forms or functions but which are not present in the last common ancestors of the species.

4. C.
 In evolution, gradualism refers to theory that states that evolution occurs slowly and gradually, thus, large changes in evolution are actually product of small changes that occur over a long period of time. The theory of gradualism was originally proposed by James Hutton in 1795.

 5. C.
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