Question

identify whether the types of selection will increase, decrease, or maintain variation in a population? labels drop zones reset all albino animals are eaten more by predators maintain variation (1/2) decrease variation (2/2) insects that prefer a less popular host plant species get more food carriers of the cystic fibrosis allele are resistant to dysentery moths with a rare color are eaten less by birds fish with rare spots instead of stripes are easier for predators to target

Explanation:

Maintain variation (1/2)

• Insects that prefer a less popular host plant species get more food: When insects choose a less - common host plant, this creates a situation where different traits (host plant preference) are favored. It promotes the existence of multiple traits in the population, thus maintaining variation.
• Carriers of the cystic fibrosis allele are resistant to dysentery: The allele for cystic fibrosis, when present in carriers, gives a survival advantage (resistance to dysentery). This means that the allele is maintained in the population, contributing to genetic variation.
• Moths with a rare color are eaten less by birds: The rare color trait in moths is favored (since they are eaten less), so this trait is maintained in the population, helping to keep variation.

Decrease variation (2/2)

• Albino animals are eaten more by predators: Albino animals have a trait (albinism) that makes them more likely to be preyed upon. Over time, this trait will become less common in the population, reducing genetic variation.
• Fish with rare spots instead of stripes are easier for predators to target: The rare spot trait in fish makes them more vulnerable to predators. So this trait will decrease in frequency in the population, leading to a decrease in variation.

Final Categorization:

• Maintain variation: Insects that prefer a less popular host plant species get more food; Carriers of the cystic fibrosis allele are resistant to dysentery; Moths with a rare color are eaten less by birds.
• Decrease variation: Albino animals are eaten more by predators; Fish with rare spots instead of stripes are easier for predators to target.

Answer:

Maintain variation (1/2)

• Insects that prefer a less popular host plant species get more food: When insects choose a less - common host plant, this creates a situation where different traits (host plant preference) are favored. It promotes the existence of multiple traits in the population, thus maintaining variation.
• Carriers of the cystic fibrosis allele are resistant to dysentery: The allele for cystic fibrosis, when present in carriers, gives a survival advantage (resistance to dysentery). This means that the allele is maintained in the population, contributing to genetic variation.
• Moths with a rare color are eaten less by birds: The rare color trait in moths is favored (since they are eaten less), so this trait is maintained in the population, helping to keep variation.

Decrease variation (2/2)

• Albino animals are eaten more by predators: Albino animals have a trait (albinism) that makes them more likely to be preyed upon. Over time, this trait will become less common in the population, reducing genetic variation.
• Fish with rare spots instead of stripes are easier for predators to target: The rare spot trait in fish makes them more vulnerable to predators. So this trait will decrease in frequency in the population, leading to a decrease in variation.

Final Categorization:

• Maintain variation: Insects that prefer a less popular host plant species get more food; Carriers of the cystic fibrosis allele are resistant to dysentery; Moths with a rare color are eaten less by birds.
• Decrease variation: Albino animals are eaten more by predators; Fish with rare spots instead of stripes are easier for predators to target.