Biology Middle School

Hurry

A few years ago the population of male blue moon butterflies on the island of Samoa declined. One hypothesis for the decline of the male butterflies is that a parasite infected the cells of female butterflies. The parasite was passed to offspring through the females’ eggs and killed the male butterfly embryos. At one point during the decline, nearly all the butterflies in the population were females, but after five years the number of males in the population increased significantly.



Which explanation most likely accounts for the increase in the number of male butterflies in the five years after the initial parasite problem?

Male butterflies in the population that survived were able to prey on the parasites living in the females’ egg cells.

Female butterflies in the population that survived had a genetic adaptation that allowed them to transform into male butterflies.

Male butterflies in the population that survived had a gene that made them resistant to the parasite, and they passed the gene on to their offspring.

Female butterflies in the population that survived were able to protect the male eggs from the parasite and provide extra care for the male offspring.

HurryA Few Years Ago The Population Of Male Blue Moon Butterflies On The Island Of Samoa Declined. One

Answers

Answer 1
A few years ago the population of male blue moon butterflies on the island of Samoa declined. One hypothesis for the decline of the male butterflies is that a parasite infected the cells of female butterflies.
Answer 2

One hypothesis which can explain the increase in the number of male butterflies is that the male butterflies in the population survived had a gene that made them resistant to the parasite, and passed the gene on to their offspring. Thus, the correct option is C.

What is Population growth?

Population growth is the change in the number of individuals or species in a population. A population is the sum total of all the living organisms which are living in a particular environment.

According to the situation, the number of males in the population has increased significantly. This increase in the number or the population growth of males can be explained as the male butterflies in the population that survived earlier had a gene which made them resistant to the parasite, and they passed on the gene to their offspring which lead to the increase in the number of males in the population.

Therefore, the correct option is C.

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