Biology

The gene that is only located on X-chromosome is said to be?

A. expressed in females only B. defective C. sex-linked D. expressed in males only Correct Answer: Option C C. sex-linked

6 years ago

When a man who is Rh-positive marries a woman who is Rh-negative, there will be incidence of?

A. still births B. sicklers C. albinos D. living children Correct Answer: Option A A. still births

6 years ago

In genetics, linkages refer to the linking of genes of the?

A. same chromosomes B. different chromosomes C. same nucleus D. different nuclei Correct Answer: Option A A. same chromosomes Explanation…

6 years ago

Which of the following statements is not a reason for conserving wildlife?

A. Attraction of tourists into the country B. Serving as a source of food C. Serving as a source of…

6 years ago

Which of the following human activities would help prevent endangered species from extinction?

A. Uncontrolled killing of species B. Regular clearing of the forest vegetation C. Temporary maintenance of species in zoological gardens…

6 years ago

The absence of alimentary canal in the parasitic flatworm can be attributed to the fact that?

A. its body does not feed B. it has no enzymes C. its body absorbs digested food D. it has…

6 years ago

The following organisms are pests of plants except?

A. birds B. nematodes C. bacteria D. rodents Correct Answer: Option C C. bacteria

6 years ago

Ascaris lumbricoides is a parasitic?

A. flat worm B. round worm C. arthropod D. elastic worm Correct Answer: Option B B. round worm

6 years ago

Rhizobium which lives in the root nodules of leguminous plants is an example of the association known as?

A. commensalism B. epiphytism C. mutualism D. saprophytism Correct Answer: Option C C. mutualism

6 years ago