Genetics

Phenylketonuria (PKU)

• Recessive autosomal abnormality causing excess mucus in the lungs and pancreas.

• Sex linked recessive. Blood does not clot properly.

• Nondisjunction of chromosomes so the individual has 3 instead of 2 on the 21st pair.

• Recessive autosomal, cant break down amino acid phenylalanine. Leads to mental retardation.

sickle cell anemia

• Recessive autosomal, cant break down amino acid phenylalanine. Leads to mental retardation.

• Autosomal recessive mutation, causes elongated red blood cells.

• Dominant autosomal, causes mental deterioration and uncontrolled muscle movement.

• Sex linked recessive. Blood does not clot properly.

cystic fibrosis

• Autosomal recessive mutation, causes elongated red blood cells.

• Recessive autosomal, cant break down amino acid phenylalanine. Leads to mental retardation.

• Recessive autosomal abnormality causing excess mucus in the lungs and pancreas.

• Dominant autosomal, causes mental deterioration and uncontrolled muscle movement.

Downs Syndrome

• Nondisjunction of chromosomes so the individual has 3 instead of 2 on the 21st pair

• Recessive autosomal abnormality causing excess mucus in the lungs and pancreas.

• Autosomal recessive mutation, causes elongated red blood cells.

• Recessive autosomal, cant break down amino acid phenylalanine. Leads to mental retardation.

• Dominant autosomal, causes mental deterioration and uncontrolled muscle movement.

Which of the following is a phenotype?

• bb

• Bb

• BB

• Blue

Who was the father of genetics?

• Sagan

• Issac Newton

• Gregor Mendel

• C.Jenkins

Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?

• 50% tall and 50% short

• 75% tall and 25% short

• 100% short

The passing of traits from parent to offspring

• Hereditary

• Genetics

• Hybrid

• Probability

G = green, g = yellow The genotype for a yellow plant is...

• GG

• Gg

• gg

• All of the choices result in yellow

the genetic makeup of an organism

• Heterozygous

• Genotype

• Phenotype