Biology Final Spring Semester

What is a gene?

• A version of a trait given by one parent

• Section of DNA that codes for a trait

• All of your genetic code

• The physical appearance of a trait

What is an allele?

• A version of a gene/trait given by one parent

• A section of DNA that codes for a trait

• A disorder that causes tastelessness

• An inheritance pattern

What is the difference between genotype and phenotype?

• Genotype is what your genes are shaped like; Phenotype is what color they are

• Genotype is what your genes code for; Phenotype is what trait you physically show

• Genotype is what trait you physically show; Phenotype is what your genes code for

Which of these is a homozygous recessive genotype?

• Hh

• hh

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?

• 0%
• 25%
• 50%
• 75%

Snap dragon color is a incomplete dominant trait.  A red flower (RR) is crossed with white flower (rr)? What color are flowers that are Rr?

• Red
• Red and White
• White
• Pink

What do we use pedigrees for?

• To look at families
• To make determinations about the offspring
• To track traits in families
• Nothing

The term for the formation of new and distinct species over the course of evolution is...

• speciation
• biological species concept
• reproductive barrier
• natural selection

Evolved from the same ancestor, but have different functions

• Homologous structures

• Analogous structures

• Vestigial structures

• All of the above

An anatomical feature that no longer seams to have a purpose in the current form of an organism

• Homologous structure

• Analogous structure

• Vestigial structure

• None of the above