The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs. For instance, digestive system organs cooperate to process food.
Recessive alleles. Recessive alleles are only expressed phenotypically when the offspring receive recessive genes from each parent. In other words they are only expressed phenotypically when they occur in pairs. In the presence of dominant gene they are never expressed phenotypically and the offsprings with both the recessive and dominant genes occurring concurrently are referred to as carriers.
<span>Because hadrosaurs could not have survived without plants, their presence in Antarctica proves that plants existed there. Additionally, fossil plants have been found in Antarctica.</span>
<span>As per studies about anorexia nervosa and bulimia nervosa, the following similar characteristics include being fearful of becoming obese, substance abuse and low self-esteem. Low self-esteem can result in suicide attempts, therefore; the only dissimilarity among the four choices is “that they are both sexually experienced.” No report is found to match this claim, at the same time, the typical onset of both diseases occur during early teens and late teen years, so they are far from being sexually experienced. </span>
Answer:
D - Its genetic diversity is very low
Explanation:
An extinction vortex can be defined as the process which populations in decline pass through to drive them into a vortex of smaller populations, endangering their survival as they tread the path to extinction.
Populations that fall to extinction vortex already have small populations which is usually as a result of certain powerful genetic factors, which cause the populations to continue to decline in size.
During genetic drift which occurs in all populations, small populations tend to lose genetic diversity as a result of the random nature of gamete sampling.
This is because any change in alleles in a small populations can have dastardly effects on the populations size due to a small gene pool.
