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Leto [7]
3 years ago
8

Bacteria first appeared 2.5 billion years ago; while tracing the first eukaryote is difficult, animals first emerged 550-650 mil

lion years ago.
How does this help explain the differences between ribosomes?
Biology
2 answers:
zalisa [80]3 years ago
6 0

Answer:

stuff

Explanation:

Ilia_Sergeevich [38]3 years ago
5 0

Answer:

dinosaurs

Explanation:

sorry my sister 9.5 billion years

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The color of a person’s eyes is determined by a single pair of genes. If they are both blue-eyed genes, then the person will hav
vaieri [72.5K]

Answer:

A) 50%

B) 25%

C) Same 25%

Explanation:

a) Smith parents should be heterozygous to the eye color gene, this means, they each should carry a copy of the “brown eye” gene (that we will call B), and one of the “blue eyed” one (that we will call b). Since the blue eye is a recessive trait, you can assume that they both inherited b genes to the daughter. If we draw a Punnet square (Bb vs Bb), we will see the possibilities of Smith having a copy of the blue eye gene (Bb), and it is 50%.

b) Again, with a Punnet square (Bb vs bb) we see that the possibility of having a blue eyed baby is 50% IF Smith carries the copy of the b gene. But since that possibility is established to be 50%, therefore the possibility of the baby to have blue eyes is reduced by half to 25%

c) The probability is the same, it does not have an additive effect, so there is no effect on the number of children

7 0
4 years ago
What are the organs that comprise the circulatory system?
Nostrana [21]

Answer:

Explanation:

The circulatory system consists of typically two organs these are the heart which also belong to the cardiovascular system and the lungs which also belong to the respiratory system these are connected to the arteries, veins and other blood vessels. The lungs receives the oxygen which diffuse oxygen into the blood vessels which transports the oxygenated blood to the heart which is pumped and circulated by the heart to all the parts of the body.    

7 0
3 years ago
5. Observe: Increase the Sim. speed by two levels. Click Play, and wait for a while. What occurs as ume goes by?​
julsineya [31]

your question not correct

8 0
3 years ago
During a recent hurricane, 25 individuals of the same butterfly species were blown onto a barrier island in southern Florida. Af
Aleks04 [339]

Answer:

community

Explanation:

Community refers to a group of populations of different species that live together in a defined habitat. These species exhibit interdependence for one or other resources. It is a level of the ecological organization just above the population and consists of hundreds of different types of organisms of various species.

Butterflies and flowering plants belong to different species. Butterflies are dependent on these plants for food. Therefore, these two together represent two populations of different species living together in habitat and are an ecological community.

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What effects will the melting glaciers have on society?
Margarita [4]
Ocean currents will continue to disrupt weather patterns worldwide. Industries that thrive on vibrant fisheries will be affected as warmer waters change where and when fish spawn.
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