Biology quiz #1: Genetics definitions quiz

Type the word that corresponds to each definition.
Quiz by biologykquiz
Rate:
Last updated: January 20, 2014
You have not attempted this quiz yet.
First submittedDecember 3, 2013
Times taken1,008
Average score32.3%
Rating3.38
Report this quizReport
10:00
Enter answer here
0
 / 31 guessed
The quiz is paused. You have remaining.
Scoring
You scored / = %
This beats or equals % of test takers also scored 100%
The average score is
Your high score is
Your fastest time is
Keep scrolling down for answers and more stats ...
Definition
Answer
A length of DNA that codes for one (or more) polypeptides
Gene
The entire DNA sequence of an organism
Genome
The creation of a single stranded mRNA copy of the DNA coding strand
Transcription
A polymer consisting of a chian of amino acid residues joined together by peptide bonds
Polypeptide
A large polypeptide
Protein
A change in the amount of or arrangement of the genetic material in a cell
Mutation
An alternative version of a gene
Allele
Changes to in the nucleotide base sequences in DNA
DNA mutations
Changes to parts of or whole chromosomes
Chromosome mutations
Genes that control the development of the body plan of an organism, including the polarity and positioning of the organs
Homeobox genes
The assembly of polypeptides at ribosomes
Translation
A triplet of nucleotide bases
Codon
A length of DNA next to the structural genes in the lac operon
Operator region
The enzyme produced as a result of the transcription and translation of the Z stuructural gene in the lac operon
β-galactosidase
The enzyme produced as a result of the transcription and translation of the Y stuructural gene in the lac operon
Lactose permease
A length of DNA to which RNA polymerase binds to begin the transcription of the structural genes, Z and Y
Promoter region
Definition
Answer
A protein that can bind to the operator region to stop the structural genes from being transcribed and translated
Repressor protein
A molecule that triggers the production of the two enzymes coded for by the lac operon
Inducer (lactose)
The clusters in which the genes from question 10 are arranged
Hox clusters
Programmed cell death
Apoptosis
A reduction division which produces 4 genetically different cells with the haploid number of chromosomes for the organism
Meiosis
The cells produced as a result of this type of cell division
Gametes
The points at which non-sister chromatids attach
Chiasmata
The swapping of sections of DNA between non-sister chromatids
Crossing over
Unprogrammed, untidy and damaging cell death
Necrosis
A type of allele that is always expressed in the phenotype
Dominant
A type of allele that is only expressed in the phenotype in the presence of another identical allele
Recessive
Alleles that both contribute to the phenotype
Codominant
An organism that has two of the same alleles of a gene
Homozygote
An organism that has two different alleles of the same gene
Heterozygote
The interaction of different gene loci so that one gene locus masks or suppresses the expression of another gene locus
Epistasis
2 Comments
+1
Level 53
Nov 3, 2015
I don't really get most of the stuff in this quiz, but it seems pretty good. Could you please accept homozygous and heterozygous? An organism that has two of the same alleles of a gene is homozygous, so I think it fits the clue.
+1
Level 28
Dec 30, 2019
Excellent quiz!