Mega Genetics Review

The video provides a comprehensive review of genetic problems, covering Mendelian and non-Mendelian genetics, including one-trait and two-trait crosses, incomplete dominance, codominance, multiple alleles, and sex-linked traits. It also discusses pedigrees and the complexity of genetics, emphasizing the importance of understanding genetic concepts and probabilities.

What is the main focus of the video tutorial?

• Exploring Mendelian and non-Mendelian genetics

• Reviewing biology concepts

• Discussing the history of Amoeba Sisters

• Learning about epigenetics

In a Mendelian one-trait cross, what is the genotype of a homozygous dominant guinea pig?

• Big H, big H

• Big H, little H

• Little h, little h

• Big H, little h

What is the phenotype ratio in a dihybrid cross of two heterozygous cats for two traits?

• 9:3:3:1

• 3:1

• 2:2

• 1:1

In incomplete dominance, what is the phenotype of a snapdragon with genotype big R, little R?

• White

• Red

• Pink

• Speckled

In codominance, what is the phenotype of a chicken with genotype BW?

• White

• Black

• Speckled

• Gray

What is the chance of a child being type O if one parent is heterozygous type B and the other is heterozygous type A?

• 75%

• 50%

• 25%

• 0%

Which genotype represents a male with hemophilia?

• X big H X little H

• X big H Y

• X little H Y

• X little H X little H

In a pedigree, what shape represents females?

• Circles

• Diamonds

• Squares

• Triangles

What does a shaded shape in a pedigree typically represent?

• A dominant trait

• An unknown genotype

• A heterozygous genotype

• A trait of interest

Why might a pedigree not be tracking a sex-linked recessive trait?

• All females are carriers

• All males are affected

• The trait is dominant

• The genotypes do not match expected patterns