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boyakko [2]
3 years ago
8

Which mechanism may have led to the evolution of the hawaiin honeycreeper

Biology
1 answer:
earnstyle [38]3 years ago
4 0
Geographical isolation
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Opsins are proteins that are found in the light-sensing cells in the human eye. Different opsin proteins are sensitive to differ
Zepler [3.9K]

Answer:

Women who carry one copy of the mutated gene still have normal color vision because they have another copy, which is not mutated, in the other X chromosome that will be the dominant one. As a result, the women are carriers of the mutated gene but not color blind.

Explanation:

Colorblindness is a sex-linked mutation. A woman has two X chromosomes, while a man has one X chromosome and one Y chromosome. The mutated gene that causes color blindness is on the X chromosome, and it is OPN1LW. So if a woman has one mutated OPN1LW in one of her two X chromosomes, the OPN1LW gene in the other X chromosome will be the dominant one stopping the woman from being colorblind.

In the case of men, as they only have one X chromosome, if there is a mutation on the OPN1LW in the X chromosome, the men will be colorblind because there is no extra copy of the gene, as it is in women.

6 0
2 years ago
One of the questions early geneticists had to answer was how only four nucleotides can specify placement of 20 amino acids in pr
jenyasd209 [6]

Answer:

<h2>Codon </h2>

Explanation:

The sequence of DNA is transcribed into mRNA, containing the sequence  for protein synthesis, protein is synthesized according to the codons in mRNA.  This sequence of nucleotide on DNA/ RNA is divided into a series of three nucleotide units, and one unit of three nucleotide is  known as codons.

There are overall 64 codons, 61 codons out of 64 codons, codes for overall 20  amino acids, and the remaining three  are stop codons.

These there codon do not code for any amino acid.

And these 61 codons, they  code for total 20 amino acids. So one amino acid can be coded by one or more than one codons.

6 0
3 years ago
What is a microscope​
Kazeer [188]

Answer:

an optical instrument used for viewing very small objects, such as mineral samples or animal or plant cells, typically magnified several hundred times.A microscope is a laboratory instrument used to examine objects that are too small to be seen by the naked eye. Microscopy is the science of investigating small objects and structures using a microscope. Microscopic means being invisible to the eye unless aided by a microscope.

4 0
2 years ago
What is one effect that burning fossil fuels has on the atmosphere?
stealth61 [152]

Answer:

increases levels of greenhouse gases

Explanation:

7 0
3 years ago
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The eyes and nose of the crocodile are set on top of it's head to allow it so to see and breathe while keeping most of it's body
azamat

Answer:

The most fitting answer would be B.Adaptations to fit a location

Explanation:

Hope this helps! If this is incorrect, I am truly sorry.

3 0
2 years ago
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