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Elenna [48]
3 years ago
7

Question 1 (1 point)

Biology
2 answers:
Inga [223]3 years ago
6 0

1. True: asexual allows for rapid reproduction

2. False: increases genetic variation in a population

3. False: sexual reproduction creates more genetic variation

4. True: during meiosis, the genes can combine differently. See punnet squares and genetics (Mendel's pea study)

Art [367]3 years ago
3 0
1.True
2.False
3.False
4.True
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List and explain the 3 paths natural selection can take.
evablogger [386]

Answer:

1. Stabilizing Selection  

2. Directional Selection  

3. Disruptive Selection  

Explanation:

Stabilizing Selection  

This type of natural selection occurs when there are selective pressures working against two extremes of a trait and therefore the intermediate or “middle” trait is selected for. If we look at a distribution of traits in the population, it is noticeable that a standard distribution is followed:

Example:  For a plant, the plants that are very tall are exposed to more wind and are at risk of being blown over. The plants that are very short fail to get enough sunlight to prosper. Therefore, the plants that are a middle height between the two get both enough sunlight and protection from the wind.

Directional Selection  

This type of natural selection occurs when selective pressures are working in favour of one extreme of a trait. Therefore when looking at a distribution of traits in a population, a graph tends to lean more to one side:

Example: Giraffes with the longest necks are able to reach more leaves to each. Selective pressures will work in the advantage of the longer neck giraffes and therefore the distribution of the trait within the population will shift towards the longer neck trait.

Disruptive Selection  

This type of natural selection occurs when selective pressures are working in favour of the two extremes and against the intermediate trait. This type of selection is not as common. When looking at a trait distribution, there are two higher peaks on both ends with a minimum in the middle as such:

Example: An area that has black, white and grey bunnies contains both black and white rocks. Both the traits for white and black will be favored by natural selection since they both prove useful for camouflage. The intermediate trait of grey does not prove as useful and therefore selective pressures act against the trait.

6 0
3 years ago
A body part lost its original function through evolution what is the vocabulary term
Natali [406]

Answer: Vestigial structures

Explanation: Vestigial structures are an anatomical feature or behavior that no longer seem to have any purpose in the present form of an organism in the given species. Usually, they are often parts of the body that used to preform important functions in earlier forms of the organism.

5 0
3 years ago
Read 2 more answers
Assuming that the three genes undergo independent assortment, predict the phenotypic ratio of the offspring in the F2 generation
o-na [289]

Answer:

The answer is 1:1:1:1:1:1:1:1.

Explanation:

7 0
3 years ago
Which pair best matches a type of land covered with inappropriate land use?
gladu [14]

Answer:

<h2>C, RANGLELAND</h2>

Explanation:

Rangeland can be described as a land which consists of grasses, shrubs, woods, wetlands etc which are ideal for the grazing of domestic and wetland animals. Hence, a rangeland is used for grazing livestock. Hence, option C is correct.

Other options, like option D, is not correct because an urban land supports city life. It is not ideal for the growing of crops as it contains pollution of the city.

3 0
2 years ago
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What happens as the reaction rate continues to rise
e-lub [12.9K]

Answer:

increasing substrate concentration,

Explanation:

The reaction rate still increases with increasing substrate concentration, but levels off at a much lower rate. By increasing the enzyme concentration, the maximum reaction rate greatly increases. Conclusions: The rate of a chemical reaction increases as the substrate concentration increases.

3 0
3 years ago
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