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Final Science Quiz


Why do you think the mother kangaroo was born with an uncommon phenotype? A dominate mutation causing it to have an incomplete phenotype albinism in the white kangaroo
How is RNA different from DNA? DNA has 2 strands, RNA has only one strand. RNA contains a different sugar molecule & their nitrogen bases
What is another name for genetic messenger? Ribonucleic acid
What are chromosomes made of? DNA
What is the first step for a DNA molecule to “_______” between its base pairs? “Unzip”
What is a mutation? Any change in a gene or chromosome
What do mutations cause a cell to do? Mutations can cause a cell to produce an incorrect protein during protein synthesis, causing the organism’s trait, or phenotype to look different.
Explain the types of mutations? ( Part 1 ) Main two are Missense mutation= this type of mutation is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a gene.
Explain the types of mutations? ( Part 2 ) Nonsense mutation is also a change in one DNA base pair. Instead of substituting one amino acid for another, however, the altered DNA sequence prematurely signals the cell to stop building a protein.
Bonus Question Get a break if you neeed to, Focus and Work Hard, and last thing. Anhcada!
Explain the effects of mutations? Mutations are neither helpful are harmful. A mutation is only harmful if it reduces the organism’s chance for survival or reproduction. Helpful mutations improve an organism’s chances of survival.
Give an example of a mutation improving the chances of survival? Antibiotic resistance in bacteria
A cat having 6 toes on each paw is a result of what? Mutation in one of its ancestors
What is the Latin term for mutation? Change
Each chromosome contains how many genes? Thousands
Having 6 fingers is harmful or helpful? An organism having 6 fingers will neither be helpful or harmful. It will just look different and the organism’s chances of survival will not be affected.
Created by: avo23