BIOS 1700 Exam 4 Questions With
100% Correct Solutions.
equal segregation - Answer alleles segregate to gametes randomly and equally
test cross - Answer breeding that can be used to determine an organism's genotype
independent assortment - Answer alleles of one gene segregate to gametes independently
of alleles of the other gene
incomplete dominance - Answer heterozygote has a phenotype that is intermediate
between two homozygotes
epistasis - Answer one gene product affects function of another
penetrance - Answer proportion of individuals with a given genotype that display the
expected trait
incomplete penetrance - Answer less than 100% of individuals with a genotype show trait
expressivity - Answer the degree to which a trait is expressed
variable expressivity - Answer 100% of individuals with genotype show trait, BUT to a
different degree
hemizygous - Answer x-chromosome in males is _________
linkage - Answer nearby genes on the same chromosome do not sort independently
same chromosome - Answer most F2 males have alleles in the same combination as the
mother. why?
recombinant chromosomes - Answer the result of crossovers between 2 alleles of interest
greater - Answer further apart the two genes are ---> __________ chance of crossing over
occurring
, genetic mapping - Answer method to locate a gene that causes a disease
mother - Answer mitochondrial DNA is inherited from the _____
inhibits - Answer methylation of a cytosine residue _________ transcription
cpg island - Answer cluster of CpG sites
lysine - Answer chemical modifications of histones occur on __________ residues
histones - Answer DNA is packages by wrapping around _________
acetylation - Answer - loosens chromatin
- addition of acetyl group
- more transcription
barr body - Answer a dense body formed from a deactivated X chromosome
regulatory transcription factors - Answer - bind to DNA enhancer sequences
- recruit general transcription factors
splicing - Answer produce different proteins in a tissue manner
alternative splicing - Answer - use different combination of exons
- multiple proteins from single gene
- can be cell-specific
rna editing - Answer chemical modification of bases of mRNA - allows pairing with different
bases
miRNA - Answer - not perfect pairing with target
- inhibit translation
- known to regulate many genes
- often over/under expressed in cancer
100% Correct Solutions.
equal segregation - Answer alleles segregate to gametes randomly and equally
test cross - Answer breeding that can be used to determine an organism's genotype
independent assortment - Answer alleles of one gene segregate to gametes independently
of alleles of the other gene
incomplete dominance - Answer heterozygote has a phenotype that is intermediate
between two homozygotes
epistasis - Answer one gene product affects function of another
penetrance - Answer proportion of individuals with a given genotype that display the
expected trait
incomplete penetrance - Answer less than 100% of individuals with a genotype show trait
expressivity - Answer the degree to which a trait is expressed
variable expressivity - Answer 100% of individuals with genotype show trait, BUT to a
different degree
hemizygous - Answer x-chromosome in males is _________
linkage - Answer nearby genes on the same chromosome do not sort independently
same chromosome - Answer most F2 males have alleles in the same combination as the
mother. why?
recombinant chromosomes - Answer the result of crossovers between 2 alleles of interest
greater - Answer further apart the two genes are ---> __________ chance of crossing over
occurring
, genetic mapping - Answer method to locate a gene that causes a disease
mother - Answer mitochondrial DNA is inherited from the _____
inhibits - Answer methylation of a cytosine residue _________ transcription
cpg island - Answer cluster of CpG sites
lysine - Answer chemical modifications of histones occur on __________ residues
histones - Answer DNA is packages by wrapping around _________
acetylation - Answer - loosens chromatin
- addition of acetyl group
- more transcription
barr body - Answer a dense body formed from a deactivated X chromosome
regulatory transcription factors - Answer - bind to DNA enhancer sequences
- recruit general transcription factors
splicing - Answer produce different proteins in a tissue manner
alternative splicing - Answer - use different combination of exons
- multiple proteins from single gene
- can be cell-specific
rna editing - Answer chemical modification of bases of mRNA - allows pairing with different
bases
miRNA - Answer - not perfect pairing with target
- inhibit translation
- known to regulate many genes
- often over/under expressed in cancer
