A population of humans lives on a fictional isolated island. 75% of the population has purple hair, not found naturally in any other human populations. The purple hair is the result of a single gene locus, for which there are two alleles; purple hair, and non-purple hair (resulting in one of the typical human hair colors, which are determined by other genes).
Which of the following describes a reason the island population fails to meet Hardy-Weinberg equilibrium requirements for purple hair locus?

Due to the limited resources available on the island, there is no record of the population ever exceeding 50 people.

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

Neither sex seems to show any mating preference towards hair color, but demonstrating the ability to grill large birds without drying out the breast meat is important to mate selection for both males and females.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

New people rarely come to the island, and when they do they are unsuccessful in convincing any of the island natives to mate with them.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The purple hair does not have any impact on survival.

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Due to the limited resources available on the island, there is no record of the population ever exceeding 50 people.
It is an isolated population, a small population. Therefore Hardy-Wienberg's equilibrium cannot be applied
So, the correct answer is 'Due to the limited resources available on the island, there is no record of the population ever exceeding 50 people'

Suggest Corrections

Similar questions

Q. In a certain population which is in Hardy Weinberg equilibrium, 36 % of individuals are homozygous for curly hair (CC). The gene for curly hair is dominant over the gene for straight hair, c. What percentage of the population has curly hair?

Q. In garden peas, purple flower color is dominant to white flower color. In a population of 500 pea plants, 180 of them are white and 320 of them are purple. How many white flower alleles are present in this population?

Q. In humans, the alleles for curly hair (H) is dominant, and the allele for straight hair (h) is recessive.
If a homozygous dominant female mates with a heterozygous male. What is the probability that the offspring will have curly hair?

Read the passage and answer the following questions:

A population of birds (population A) on a remote, isolated island is studied to determine beak length. The resulting data are plotted in Figure 1.

Figure 1

Suppose that 200 years later, the beaks of the birds on the island were again measured (Population B). The data, when plotted, yielded a graph as in Figure 2.

Figure 2

Suppose that a researcher studying Population B found that birds with beaks of 20 mm were unable to mate with birds that had 40 mm beaks. These two groups of birds would now be classified as

Q. The allele for black hair (B) is dominant over brown hair (b) and the allele for brown eye (E) is dominant over blue eye (e). Out of the offsprings obtained upon mating a black haired and brown eyed individual (BbEe) with a brown haired and brown eyed individual (bbEE). The ratio of brown haired and brown eyed individuals to black haired and brown eyed individuals is ____________.

Join BYJU'S Learning Program