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Ray Of Light [21]
3 years ago
9

On the Galápagos Islands, Darwin observed tortoises with domed and saddle-shaped shells. How did Darwin’s observations of these

tortoises help him form the theory of evolution by natural selection?
Biology
1 answer:
Archy [21]3 years ago
4 0
Helped to confirm that environmental changes cannot affect the characteristics of a species.
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Mitochondria and Chloroplast

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Because the mitochondria is the power house

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The mayhaw fruit trees produce a fruit that has never been cultivated by humans. two mayhaw trees are growing in a field. they a
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3 0
3 years ago
Analysis of _____ can be used for very precise personal identification. It is even used in anthropology to identify the bones of
fomenos

Answer:

DNA

Explanation:

The DNA of a human being is very unique as each human has a different sequence of it. This allows for it to be used for very precise identification of humans such that it has been used to solve crimes.

DNA is also present in every cell in the human body which is why it is useful in anthropology as well. Anthropologists can simply extract cells from a bone and through the DNA extracted, find out more about a dead person.

Therefore, DNA is the answer.

8 0
3 years ago
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In an individual of genotype aa, where are the a and a alleles physically located? view available hint(s) in an individual of ge
Alex787 [66]

Answer:

One allele is on one chromosome, and the other is in the same position (locus) on the homologous chromosome.

Explanation:

The genotype of an organism refers to the genetic makeup or complete set of genes. The genes control the trait of an organism and exist in an organism in their alternative form called alleles.

Since the alleles are the alternative form of a gene, therefore, they must be present at the same position called a locus.  

These alleles are present on the homologous chromosome in which each homologous chromosome is contributed by each parent. Therefore when the genotype is aa then a and a allele will be present on homologous chromosomes in the same position.

Thus, the selected option is correct.

5 0
4 years ago
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