Following are key points about the effect of genetic drift:

A. Genetic drift is significant in small populations.

B. Genetic drift can cause allele frequencies to change in a pre-directed way.

C. Genetic drift can lead to a loss of genetic variation within populations.

D. Genetic drift can cause harmful alleles to become fixed.

Which one of the following combination of the above statements are true?

TLS Online TPP Program

#Question id: 1469

#Unit 4. Cell Communication and Cell Signaling

Forms of the Ras protein found in tumors usually cause which of the following events to occur?

TLS Online TPP Program

#Question id: 2081

#Unit 2. Cellular Organization

The plasma membrane around a eukaryotic cell is composed of:

TLS Online TPP Program

#Question id: 26788

#Unit 8. Inheritance Biology

Which of the following factors did not contribute to Mendel’s success in his study of heredity?

a.His use of the monoecious pea plant

b.His study of plant chromosome

c.His adoption of an experimental approach

d.His use of mathematics

e.The Plant use is easy to cultivate

TLS Online TPP Program

#Question id: 3375

#Unit 11. Evolution and Behavior

	Evolutionary force		Caused
A	Mutation	i	Increase genetic variation within population
B	Genetic Drift	ii	Decrease genetic variation within population
C	Migration	iii	Decrease genetic variation between  population
		iv	Increase genetic variation between population

Which of the following combination is correct?

TLS Online TPP Program

#Question id: 15738

#Unit 5. Developmental Biology

In humans and many other mammals, the sex chromosomes are called: