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Allisa [31]
3 years ago
6

What is natural selections role in evolution

Biology
1 answer:
Nezavi [6.7K]3 years ago
3 0

Explanation: The basic idea of biological evolution is that populations and species of organisms change over time. ... Darwin also suggested a mechanism for evolution: natural selection, in which heritable traits that help organisms survive and reproduce become more common in a population over time.

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Mrrafil [7]
Quartz sand and Black sand are the most common. Each type is formed by rocks breaking down from weathering.
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4 years ago
1. What is an invasive species?
NARA [144]
1. Am invasive species is not apart/native to a specific area and could potentially cause damage to the environment and in some cases human health.
2.Invasive species can be found anywhere, considering that they are not native to an area.
3. Many invasive species form interactions with pollinators, DIRECTLY, and even though this isn’t necessary to the invader, pollinators are the direct role because they play a part in plant invasion, basically meaning they could damage the plant greatly. More direct consequences could be competition.
4. An example of INDIRECT consequences would be via a multi species. Like for example, effecting a certain species just to get to another species, diversely.
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Part a- A vector is a specific organism that by itself couldn’t spread a certain disease, but by pathogens
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Hope this helps! :)
-Syd
7 0
3 years ago
Consider the cross Aa BB Cc dd X Aa bb cc Dd. Assume that the four allelic pairs assort independently. (a) How many different ty
Ksivusya [100]

Answer:

The parent with the genotype Aa BB Cc dd can produce 4 different types of gametes.

Explanation:

<em>The law of independent assortment states that the alleles for a trait separate when gametes are formed. </em>

In the parent genotype Aa BB Cc dd, the allelic pairs with variation present are Aa and Cc. Therefore, the source of variation in the possible combinations  during meiosis, largely arises from these 2 allelic pairs.

Independently assorting these pairs, we have ; A, a, B, B, C, c, d, d

The possible combinations therefore are:

  • ABCd
  • ABcd
  • aBCd
  • aBcd
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Question 5(Multiple Choice Worth 4 points)
uranmaximum [27]

Answer:

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Studentka2010 [4]

Explanation:

this has to do with your nose the nose has a part that you can smell with called <em><u>olfactory system</u></em><em><u> </u></em> which help you to smell

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