Exploring Mendelian Genetics and Dihybrid Crosses

This video tutorial introduces the concept of heredity, focusing on Mendelian genetics. It covers the basics of chromosomes, genes, and alleles, and explains Gregor Mendel's foundational experiments with pea plants. The tutorial details Mendel's three laws of inheritance: dominance, segregation, and independent assortment. It also demonstrates how to use Punnett squares and probability to predict genetic outcomes, providing a comprehensive overview of basic genetic principles.

What type of cells contain two copies of every chromosome?

• Gametes

• Haploid cells

• Diploid cells

• Alleles

What are gametes?

• Dominant genes

• Diploid cells

• Reproductive cells

• Cells with two alleles

Who is known as the father of genetics?

• Charles Darwin

• Gregor Mendel

• James Watson

• Francis Crick

What did Gregor Mendel use for his genetic experiments?

• Pea plants

• Yeast

• Fruit flies

• Mice

What does a dominant allele do?

• It is always hidden

• It expresses itself over a recessive allele

• It cannot determine phenotype

• It appears only in homozygous form

What is the phenotype?

• The genetic makeup of an organism

• The physical appearance resulting from the genotype

• A type of dominant gene

• A tool used in genetic experiments

What does heterozygous mean?

• Having only recessive alleles

• Having only dominant alleles

• Having two different alleles

• Having two identical alleles

What is a Punnett square used for?

• To calculate mathematical probabilities

• To predict genetic outcomes

• To predict weather patterns

• To determine cell types

What law explains how alleles segregate during gamete formation?

• Law of Independent Assortment

• Law of Segregation

• Law of Dominance

• Law of Probability

Which of Mendel's laws states that traits are passed independently of one another?

• Law of Probability

• Law of Dominance

• Law of Segregation

• Law of Independent Assortment