Answer:
The two key components of ecosystem stability are resilience and resistance. Resistance is an ecosystem's ability to remain stable when confronted with a disturbance.
Answer:
prophase 1 and metaphase
Explanation:
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Crossing over of chromosomes takes place in the Prophase I phase of meiosis. This process, crucial for genetic diversity, involves the exchange of genetic material between paired homologous chromosomes.
Crossing over of chromosomes occurs during the Prophase I phase of meiosis. This process is critical for the generation of genetic diversity as it allows the exchange of genetic material between homologous chromosomes. During crossing over, homologous chromosomes pair up and exchange segments of their DNA. This results in chromosomes that have a mix of genes from both parents, producing unique combinations of traits in offspring.
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Answer:
Inbreeding and greater chance of passing deletereous mutations through generations
Explanation:
There are several reasons why small populations are more prone to genetic diseases. One of them is that in small populations there tends to be more inbreeding , that is breeding between individuals are closely related. Inbreeding increase the chances of offspring being affected by deletereus homozygous genotypes.
On the other hand, the acquisition of a deleterious mutation in a small population is more likely to be spread in that small population than in a large population.
The small population is prone to the disease more than the large population as the former have less diversity of organism and therefore there are fewer chances of occurrence of an organism that have resistance to the disease.
Further Explanation:
Genetic drift refers to the change in the allele frequency observed in the population due to random sampling. This may occur due to a bottleneck effect or Founder’s effect.
The allele frequency remains constant if the population follows the Hardy-Weinberg equilibrium.
There is more probability of occurrence of diversity in a population of large size that is the large population has an organism that has homozygous dominant allele, heterozygous allele, and homozygous recessive allele. So there is more probability that this population may have an organism having disease-resistant allele than the population of small size.
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Answer Details:
Grade: High school
Chapter: Evolution
Subject: Biology
Keywords:
Population, organism, resistance, disease, Genetic drift, allele frequency, random sampling, bottleneck effect, Founder’s effect, Hardy-Weinberg equilibrium, homozygous dominant allele, heterozygous allele, a homozygous recessive allele