Answer:
ecosystem one
Explanation:
if there are more species then there is a higher chance that more will survive a natural disaster and therefore recover faster
Answer:
Glaciation and the Antarctic Circumpolar current
Explanation:
As the supercontinents continued to separate, cold water was easily transported around the globe through the Antarctic Circumpolar current. This assisted periodic glaciation during the Cenozoic Era, leading to a series of ice ages.
Linear fixed model is a statistical model that includes both fixed effects and random effects is known as a mixed model, mixed-effects model, or mixed error-component model. These models have applications in a wide range of fields in the physical, biological, and social sciences.
<h3>How do you perform a genome scan with a linear mixed model?</h3>
Mice genetic mapping provides a superb illustration of the value of population structure. The tiny number of founders (fancy mice) from whom laboratory mouse strains originated led to many population bottlenecks. The history of wild-derived strains differs from that of laboratory strains since they are not descended from fancy mice. In order to tackle relatedness between people and population structure issues brought on by varying ancestries, linear mixed models were devised. In order to account for population structure, known kinship, and unknowable relatedness, linear mixed models (LMMs) take genome-wide similarity between all pairings of individuals into consideration. By include kinship in the model, linear mixed models in mapping studies can successfully adjust for genetic relatedness between individuals in a population.
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Answer:
a. The original spraying has caused a permanent mutation, giving the insects genetic resistance to the spray.
Explanation:
This is a practical evidences of mutation and variation, as mechanisms of evolution.
The insecticide is the selective pressure. As a results of continuous spray, the parents of the present mosquitoes must have acquired certain characteristics or traits by gene mutation which makes them resistant to the selective pressure (insecticides), and therefore survive the spray in the past.
Therefore when these resistant parents mated, with high reproductive success (leading to large gene pool of these traits,); variation in the genetic composition increases as the resistant gene is passed from generations to generations in the population. Therefore, the population of present day mosquito with genetic resistance to insecticides increases.They are therefore naturally selected, and able to survive as the present day mosquitoes with high resistance to insecticides.
