multiple choice biology chp 12 13

Discovered percentages of adenine and thymine and percentages of cytosine and guanine

• maurice wilkins

• erwin chargaff

• james watson

• rosalind franklin

• francis crick

took x-ray diffraction images

• rosalind franklin

• maurice wilkins

• james watson

• francis crick

• erwin chargaff

worked with rosalind

• james watson

• rosalind franklin

• maurice wilkins

• francis crick

• erwin chargaff

discovered actual structure 2 anwsers

• james watson

• erwin chargaff

• rosalind franklin

• francis crick

• maurice wilkins

point mutation

• a single nitrogenous base is added or deleted from dna

• change in a single nitrogenous base in dna

• any heritable changes in dna

framshift mutation

• change in a single nitrogenous base in dna

• a single nitrogenous base is added or deleted from dna

• any heritable changes in dna

Part of a chromosome is left out

• duplication

• inversion

• translocation

• deletion

part of a chromosome breaks off and reattaches backwards

• duplication

• inversion

• translocation

• deletion

duplicated chromosomes fail to seperate

• duplication

• inversion

• translocation

• deletion

part of a chromosome breaks off and attaches to sister chromatid

• duplication

• inversion

• translocation

• deletion