Biology semester TEST

Which of the following is heterozygous

• FF
• tt
• Gg
• RR

Which of the following is homozygous recessive?

• rr
• AA
• TT
• Ff

What does the prefix hetero- in heterozygous mean?

• same
• different
• dating
• human

Which of the following is homozygous dominant?

• Jj
• Rr
• MM
• ee

The physical appearance of a trait is known as the-

• genotype
• phenotype
• characteristics
• intelligence

How many letters does a genotype contain?

• 1
• 2
• 3
• 4

Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's phenotype?

• Brown Hair
• Blonde Hair
• Brown and Blonde Hair
• Black Hair

Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's genotype?

• BB
• bb
• Bb
• bB

The two-letter code that describes the genetic traits of an organism is called a-

• Phenotype
• Genotype
• Physical Appearance
• Intelligence

The different forms of a gene are called 

• traits
• chromosomes
• alleles
• peas