Basic Genetics

Complex molecule that carries genetic information that defines an organism's traits. It is stored in the nucleus.

• Protein

• DNA

• RNA

• Glucose nucleic acid (GNA)

Tags

NGSS.HS-LS3-1

NGSS.HS-LS1-1

Dominant alleles are represented by a:

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

Aa, DD, bB, yy are all examples of

• genotypes
• phenotypes

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

• recessive
• dominant
• lower case letter
• both 

What you see, or the physical appearance.

• Genotype
• Phenotype
• Homozygous
• Heterozygous

Tags

NGSS.HS-LS3-1

B = brown eyes

b = blue eyes

One brother has genotype BB and the other brother has genotype Bb.

Which statement is true about these two brothers?

• They have same phenotype and genotype

• They have different phenotypes and genotypes

• They have same phenotype, but different genotypes

• They have different phenotypes, but the same genotype

Tags

NGSS.HS-LS3-1

Which of the following would be a phenotype?

• Aa

• red hair

• heterozygous

• DNA

Which of the following genotypes is heterozygous?

• Bb
• BB
• bb
• B

Which of the following genotypes is homozygous dominant?

• Yy

• yY

• yy

• YY

Which of the following genotypes is homozygous recessive?

• Tt

• tt

• TT

• tT