Understanding Lamarckism

What was a major limitation in Lamarck's time that affected his theory of evolution?

• Absence of knowledge about genetics

• Lack of understanding of natural selection

• Inability to observe animal behavior

• Lack of fossil evidence

What does the principle of 'use and disuse' suggest in Lamarck's theory?

• Organisms can change their environment

• Structures used more frequently become stronger

• Natural selection favors certain traits

• Genetic mutations occur randomly

Why can't phenotypic changes affect an organism's genotype according to modern genetics?

• Genotype changes only through natural selection

• Phenotypic changes do not alter DNA

• Phenotypic changes are temporary

• Genotype is determined by environmental factors

In Lamarck's view, how are acquired characteristics passed to offspring?

• Through selective breeding

• By phenotypic changes during the parent's life

• By environmental adaptation

• Through genetic inheritance

What is a common misconception about Lamarck's theory?

• Phenotypic changes can alter DNA

• It is based on genetic inheritance

• It involves natural selection

• It explains evolution through random mutations

How did Lamarck explain the evolution of giraffes' long necks?

• Through random genetic drift

• By stretching their necks to reach food

• By genetic mutations

• Through natural selection

What is a key word to include when explaining Lamarck's theory in exams?

• Random

• Passive

• Static

• Active

How would Lamarck explain the transition from lizards to snakes?

• Snakes were naturally selected for their shape

• Lizards lost their legs due to disuse

• Lizards adapted to aquatic environments

• Lizards evolved due to genetic mutations

What is the main focus when applying Lamarck's theory to exam questions?

• Discussing environmental changes

• Describing genetic mutations

• Using specific examples

• Explaining natural selection

What should you mention when explaining Lamarck's theory in an exam?

• The impact of environmental changes

• The role of DNA

• The principle of natural selection

• The principles of use and disuse and acquired characteristics