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ollegr [7]
3 years ago
14

How long ago did homo sapiens appear

Biology
1 answer:
GuDViN [60]3 years ago
4 0
About from <span>1.8 to 1.3 million years ago,</span>
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In alligators, the allele M results in a pigmented color, while the allele m results in a white (albino) color. Suppose that the
N76 [4]

Answer: Complete dominance

Explanation: complete dominance occur when a dominant allele in heterozygous form completely mask the effect of the recessive allele.

For example a situation where Tt having two allele and allele T for tallness is dominant over t for shortness making the plant phenotype a Tall plant. This is called complete dominance.

A condition when the heterozygous allele do not completely expressed itself over the recessive allele is called Incomplete dominance.

For the plant to have a pigmented color in an heterozygous form the allen M for pigment is completely dominant over allele m for albino.

6 0
3 years ago
Suu-OS
Colt1911 [192]
I would say A is the correct answer. B and C are definitely wrong, and I think D is talking about genes and not chromosomes.
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3 years ago
EXPLAIN how plants allow all organisms on Earth to survive? (3-4 reasons required)
andrew-mc [135]

Plants on Earth provide food, some even provide shelter to some animals, and plants such as trees provide oxygen to the environment.

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3 years ago
If a cell loses control of gene expression, what happens?
kipiarov [429]

Answer:

Abnormal, unhealthy cells develop

Explanation:

Gene expression is the process through which genes are turned on through transcription, and to some extent through the translation of the mRNA.

Gene expression is highly regulated to ensure the cell can create the correct combination of proteins to carry out it's tasks. If gene expression is out of control, the mRNAs that are transcribed in the cell are not properly regulated, and therefore the proteins in the cell are not regulated. Since proteins carry out essentially every function in the cell, the cell becomes unhealthy, and incorrectly uses its resources.

Accurate control of gene expression also ensures that the cell can perform specialized functions, it is what makes a heart cell distinct from a brain cell, for example. Therefore, if it is out of control, cells will not be specialized correctly.

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3 years ago
Which principle helps to explain the reason behind why alleles for a single trait separte
vichka [17]
<span>Segregation would be the answer :)</span>
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3 years ago
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