Basic Genetics

Which gentotype would be considered heterozygous?

• Rr
• RR
• rr
• YY

Tags

NGSS.HS-LS3-2

Who is the father of genetics?

• Peabody
• Starsky
• Hutch
• Mendel

Phenotype refers to an organism's:

• genetic code
• physical appearance
• ratio
• parents

The genotype Dd is considered homozygous dominant.

• True
• False

Red flower color is dominant to white flower  color in rose plants. What is the  expected result of a cross between two heterozygous rose plants?

• 100% red
• 75% red, 25% white
• 50% red, 50% white
• 75% white, 25% red

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In squash plants, yellow fruit (Y) is dominant  to white fruit (y). If two plants  heterozygous for yellow fruit are crossed,  what are the possible genotypes of the  offspring?

• YY, Yy
• Yy
• YY, yy
• YY, Yy, and yy

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Different forms of genes:

• alleles
• phenotype
• genotype
• homologous chromosomes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Dominant alleles are represented by a:

• Male gene
• lowercase letter
• recessive trait
• capital letter

Tags

NGSS.HS-LS3-1

T - tall and t = short
In the punnett square below, what belongs in the missing square

• tt
• Tt
• Bb
• TT

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 

• 0%
• 25%
• 50%
• 75%

Tags

NGSS.HS-LS3-3

NGSS.HS-LS4-3