Basics of Mendelian Genetics

Passing on traits from parents to offspring

• Chromosome

• Genotype

• Heredity

• Allele

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is the percentage of homozygous recessive offspring?

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following is a heterozygous genotype? 

• GG
• gg
• GGG
• Gg

In Mendel's pea plants, the homozygous recessive phenotype was white flowers.  If Mendel crossed two homozygous recessive pea plants, what color flowers would be seen in the offspring?

• white and purple
• white 
• purple
• lavendar

Dominant alleles are represented by a(n)

• phenotype
• lower case letter
• upper case letter
• punnett square 

D = dimples        d = no dimples 
What is the genotype for a homozygous recessive offspring?

• DD
• Dd
• dd

Tags

NGSS.HS-LS3-2

Round (R) seeds are dominant to wrinkled (r) seeds.
What is the genotype for a homozygous dominant offspring?

• RR
• Rr
• rr

Tags

NGSS.HS-LS3-1

What do you call the physical expression of a gene?

• genotype
• dominant
• phenotype
• allele

Tags

NGSS.HS-LS1-1

The term for the different forms of a trait. 

• DNA
• Chromosomes
• Genes
• Alleles

The genetic makeup of a trait.  (The letters represent this)

• Genes
• Phenotype
• Genotype
• Characteristics

Tags

NGSS.HS-LS1-1