Genetics

Genotype refers to the ...

• physical expression of the genes
• the possible combination of alleles in a gene
• whether an allele is dominant or recessive
• how an organism will appear

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Which of the following is a phenotype?

• BB
• Bb
• bb
• Blue eyes

Tags

NGSS.HS-LS4-4

The trait that will always be expressed if one copy of an allele is present.

• recessive

• dominant

• co-dominant

The trait that will be expressed only if two copies of the allele are present.

• recessive

• dominant

• co-dominant

What type of inheritance do two alleles have if their traits blend together? 

• Incomplete Dominance
• Co-Dominance
• Mendelian Inheritance
• Homozygous Inheritance

A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?

• Incomplete Dominance
• Co dominance
• Independent assortment
• Recessive inheritance

Swapping DNA segments with non-homologous chromosomes is known as which type of mutation?

• Point

• Frameshift

• Nondisjunction

• Gene Translocation

Tags

NGSS.HS-LS3-2

Trisomy 21, or having 3 copies of chromosomes 21 is known as which type of mutation?

• Point

• Trinucleotide Repeat Expansion

• Nondisjunction

• Gene Translocation

Tags

NGSS.HS-LS3-2

A point mutation that does not change the amino acid sequence is known as a(n) ____________ mutation.

• Frameshift

• Nondisjunction

• Inversion

• Silent

Tags

NGSS.HS-LS3-2

DNA molecule segment is : TTACGCAAG
The mutated DNA segment is TTCGCAAG. This is an example of ___ mutation.

• Substitution
• Deletion
• Insertion
• Inversion

Tags

NGSS.HS-LS3-2