Lessons in Genetics

If a heterozygous parent and a homozygous recessive parent mate, what percentage of their offspring will be dominant?

• 25%

• 50%

• 75%

• 100%

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

• 0 %

• 25%

• 50%

• 75%

"T" is dominant, "t" is recessive. If an organism has the genes "Tt."

Which will trait will result?

• "T" dominant

• "t" recessive

"G" is dominant, "g" is recessive. If an organism has the genes "gg." Which will trait will result?

• "G" dominant

• "g" recessive

"M" is dominant, "m" is recessive. If an organism has the genes "MM." Which will trait will result?

• "M" dominant

• "m" recessive

Which most likely explains why Emily has brown hair?

• Emily’s favorite color is brown.

• Emily has a parent with brown hair.

• Emily’s older brother has brown hair.

What should you use to predict the traits of offspring when you know the genes of two parents?

• a graph

• a flow chart

• a data table

• a Punnett square

Which statement best supports why many offspring look similar to their parents?

• Offspring inherit traits from only one parent.

• Offspring inherit traits from both parents.

• Parents choose which traits to pass on to their offspring.

Tags

NGSS.MS-LS3-2

What allele combination should go in the missing box?

• AA

• Aa

• aa

• none of these

Tags

NGSS.MS-LS3-2

The rules of DNA pairing states that Adenine (A) always pairs up with

• Thymine

• Cytosine

• Adenine

• Guanine