Genetics Review

------is the combination of two alleles that are different from one another.

• homozygous
• heterzygous
• phenotype
• trait

The letters that make-up the genetic code for a trait

• genotype
• heterzygous
• phenotype
• trait

Tags

NGSS.HS-LS3-1

NGSS.HS-LS1-1

---- Is the combination of two alleles that are the same

• genotype
• homozygous
• phenotype
• trait

The physical appearance of the allele combination the offspring receives

• genotype
• homozygous
• phenotype
• dominant

Black fur (B) is dominant. Find the probability of a black offspring in a cross: bb x bb. 

• 0%
• 25%
• 50%
• 100%

Tags

NGSS.HS-LS4-3

Look at the Punnett Square. What's the probability of having the recessive offspring?

• 100%
• 75%
• 50%
• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

What is the phenotype for the recessive trait?

• brown eyes
• green eyes
• blue eyes

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A type of gene that can be hidden is called

• genotype
• recessive
• dominant
• allele

A section of the DNA strand that determines a specific trait

• gene
• trait
• chromosome
• allele

Tags

NGSS.HS-LS3-1

NGSS.HS-LS1-1

Sickle cell disease (abnormally shaped red blood cells) is a recessive disease in humans. Which gene combination(s) would result in someone being affected by sickle cell disease?

• SS
• ss
• Ss

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2