Genetics

Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?

• 0 %
• 25%
• 50%
• 75%

Dominant alleles are represented by a:

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

Which of the following is a phenotype?

• Aa
• red hair
• heterozygous genes
• mutated DNA

Aa is

• homozygous (purebred)
• heterozygous (hybrid)

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

• recessive
• dominant
• lower case letter
• both 

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

• GG
• Gg
• gg
• all of the choices result in yellow

How many pairs of chromosomes are in your cells?

• 23
• 19
• 12
• 10

Why are your chromosomes arranged in pairs?

• Because DNA has a double-helix structure.
• Because pairs are able to divide more easily.
• Because you get one from your mother and one from your father.
• Scientists aren't sure.

Curly hair is dominant and straight hair is recessive. 
If a curly-haired man has a baby with a straight-haired woman, what will happen?

• The baby will probably have straight hair.
• The baby will definitely have straight hair.
• The baby will probably have curly hair.
• The baby will definitely have curly hair.

Which of the following statements is true of asexual reproduction?

• The offspring are identical to the parent.
• Two parents join to make an offspring.
• Coral animals use this method of reproduction.
• The offspring are similar, but not identical to either parent.