Answer:
a. bottleneck effect.
Explanation:
A bottleneck effect occurs when some adverse environmental conditions such as typhoons and famine reduce the population size considerably. The allele frequencies of the population are changed. As the population grows again, the gene pool has different allele frequencies than the original population. During population growth, some harmful alleles may become more abundant resulting in a rare disease such as achromatopsia. Therefore, the given population represents the bottleneck effect.
Ecologists make models to gain insight into complex phenomena such as the effects of global warming on ecosystems.
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Turner syndrome occurs when the individual inherits only one (female) X chromosome.
<h3>What is Chromosome?</h3>
This is referred to a thread like structure which contains DNA and protein components.
An individual inheriting only one female X chromosome means that the child will have turner syndrome which is characterized by short height, heart defects etc.
The complete question is:
Which condition occurs when the individual inherits only one (female) X chromosome?
Read more about Turner syndrome here brainly.com/question/953084
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The sugar and phosphate portion of the nucleotides are found "<em><u>as segments of the rails</u></em>" on the DNA twisted ladder.