During an earthquake, geologists measure two types of waves. Classify each type of wave according to its properties.

Why was using reverse transcriptase necessary for finding a way to make artificial insulin?

KengaRu [80]

A, scientists had to convert information from amino acids to nucleic acids.

8 0

3 years ago

Which type of selection tends to increase genetic variation? A. Disruptive selection B. Directional selection C. Stabilizing sel

aliina [53]

Answer:

Which type of selection tends to increase genetic variation? A. Disruptive selection B. Directional selection C. Stabilizing selection

The Answer is option A (Disruptive selection)

Explanation:

Selection can either shift the mean value of a trait, reduce the trait's variation, or increase its variation.

Genetic variation which allows natural selection to increase or decrease frequency of alleles already in the population is a source of phenotypic variation as it refers to differences in all the hereditary information of members of the same species.

Disruptive Selection is important in maintaining variation and initiating speciation as it Increases Variation by favoring alleles corresponding to more extreme phenotypes. But for it to occur, the mean phenotype has to experience the lowest fitness. Disruptive selection affects the frequency distributions of alleles and genotypes within a population.

Disruptive selection is based on the variance of a trait in a population as it increases genetic variance by equalizing the frequencies of existing alleles at polymorphic loci (a genetic loci with two or more alleles). Disruptive selection maintains and may even increase variation in natural populations by favoring extreme phenotypes, individuals with extreme values for a trait have greater reproductive success than individuals with intermediate values.

7 0

3 years ago

PLEASE HELP<br><br> Complete the Concept Definition Map for ATP

Elden [556K]

Answer:

Why are you talking help in french wow u bad

Explanation:

Why are you talking help in french wow u bad

4 0

2 years ago

How does artificial reproduction help in the excess production of fruits

faltersainse [42]

Answer:

Artificial reproduction does help in excess production of fruits. Explanation: Artificial reproduction is a process in which the plants are made to artificially fertilise in order to improve the quality and sometimes the quantity of the by products such as flowers and fruits produced by the plant.

Explanation:

4 0

3 years ago

How does a new hypothesis replace an older explanation of something in the natural world

Flura [38]

How does a new hypothesis replace an older explanation of something in the natural world? To understand this let us look at one of the classical example of geocentric theory and heliocentric theory. The geocentric theory states the Earth is at the centre of the solar system and the Sun, Moon, and all the other planets revolve around it. This ancient theory failed to explain the phenomenon like the phases of Moon, solar eclipse and lunar eclipse. The modern heliocentric theory which states that the Sun is at the centre of solar system, and all the planets including the Earth revolve around it. This theory was able to explain all the phenomenons unlike the geocentric theory. Hence the heliocentric theory replaced the geocentric theory.

5 0

4 years ago