In an area in Africa, temporary pools form where rivers flow during the rainy months. Some fish have developed the ability to use their fins as feet to travel on land from one of these temporary pools to another. Other fish in these pools die when the pools dry up. What can be expected to happen in this area after many years?

EVOLUTION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

In an area in Africa, temporary pools form where rivers flow during the rainy months. Some fish have developed the ability to use their fins as “feet” to travel on land from one of these temporary pools to another. Other fish in these pools die when the pools dry up. What can be expected to happen in this area after many years?

A	The fish using fins as “feet” will be present in increasing number.
B	“Feet” in the form of fins will develop on all fish.
C	The fish using fins as “feet” will develop real feet.
D	All of the varieties of fish will survive and produce many offspring.

Explanation:

Detailed explanation-1: -Answer: The preferable option will be-1. 1. The fish using ventral fins as “feet” will be present in increasing numbers.

Detailed explanation-2: -The most efficient method of controlling mosquitoes is by reducing the availability of water suitable for larval and pupal growth.

Detailed explanation-3: -Four primary pigments of green plants can easily be separated and identified using a technique called paper chromatography. These pigments include two greenish pigments called chlorophylls and two yellowish pigments called carotenoids. Pigments are separated according to differences in their relative solubilities.

Detailed explanation-4: -Which condition would most likely result in a human body being unable to defend itself against pathogens and cancerous cells? The presence in the body of the virus that causes AIDS.

Detailed explanation-5: -Gene B contains the code for an enzyme that cannot be synthesized unless gene A is also active. Which statement best explains why this can occur? A hereditary trait can be determined by more than one gene. A portion of a fruit-fly chromosome with some of the genes at their loci is represented below.

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NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION