What are Mendel and Genetic Crosses

The video explores the history of selective breeding, highlighting Gregor Mendel's groundbreaking work on inheritance using pea plants. Mendel discovered that traits are inherited as discrete units, leading to the concepts of dominant and recessive genes. His experiments showed that traits might not appear in every generation but can be passed on, as demonstrated by the 3:1 ratio in offspring. The video also introduces genetic diagrams and Punnett squares to illustrate these concepts.

Who was the scientist that correctly hypothesized the mechanism of inheritance, contrasting with Darwin and Lamarck?

• Charles Darwin

• Jean-Baptiste Lamarck

• Isaac Newton

• Gregor Mendel

What did Mendel conclude about the inheritance of traits in pea plants?

• Traits are a blend of both parents

• Traits are inherited as distinct units from each parent

• Traits are only inherited from the mother

• Traits are only inherited from the father

In Mendel's experiments, what was the dominant trait in pea pod color?

• Green

• Yellow

• Purple

• White

What is the term used to describe an organism that carries a gene for a trait that is not expressed?

• Recessive

• Dominant

• Carrier

• Hybrid

What tool can be used to predict the possible genotypes of offspring in genetic crosses?

• Genetic diagram

• Punnett square

• Mendelian chart

• Inheritance table