Exam (elaborations)
BIOS 344 Chapter 1 Questions answers latest update
- Course
- BIOS 34344
- Institution
- University Of Notre Dame
BIOS 344 Chapter 1 Questions answers latest update
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Bios 344 Final Examindividuals afflicted with a ______ genetic disorder usually have one afflicted
parent - dominant
gametes produced from organisms with no recombination - CAN be genetically
identical
inbred individuals are more likely to be afflicted with - recessive genetic disorders
the drosophila bar eyed phenotype is an example of - dosage
compensation/aneuploidy
haploid organisms cannot have - 2 homologues
the centromere is a region of DNA that - binds the spindle
increasing genetic linkage - decreases the number of offspring with non-parental
genotypes
repeated S phases without mitosis can generate - polyploid cells
,in the absence of recombination, the two progeny of ______ are genetically
identical - a meiosis II event
a null mutation has a more severe phenotype than a - partial loss (hypomorph)
mutation
haploid cells cannot undergo a successful - meiosis
in a cross btwn 2 parents heterozygous at a single gene - half the offspring will
breed true
in a cross between 2 parents heterozygous at two genes - 1/4 of offspring will
breed true
mutations in somatic cells - CANNOT be transmitted to offspring
cells from drosophila females contain - 0 barr body
cells from drosophila males contain - 0 barr body
daughter cells of a mitosis and cell division are genetical identical because - sister
chromatids are genetically identical
,the segregation pattern of homologues during meiosis I underlies - Mendel's First
Law
organisms that are heterozygous for 4 genes produce - 16 types of gametes
organisms that are heterozygous for 5 genes produce - 32 types of gametes
chromosome disjunction represents a potential violation of mendel's - first law
the DNA seq of homologues from true-breeding strains will be - more similar to
each other than DNA seq of homolgoues from non-true-breeding strains
triploid organisms are likely to be - sterile
in drosophila, XO flies are - male
sister chromatids separate during - Meiosis II
human females use _______ to equalize female and male gene expression of X-
chromosomal genes - X-chromosome inactivation
with pleiotropy, a mutation affects - several different traits
, both duplications and deletions can lead to - aneuploidy
translocations in the ___ can lead to cancer but not genetic disease - somatic cell
line
homologous chromsomes have - similar DNA sequences
a self-cross of an Aa Bb Cc plant would yield ____ degrees of freedom - 7
in organisms expressing ____ alleles, phenotypes of each allele are always
expressed - co-dominant
______ suggests a genetic imbalance - aneuploidy
the Y chromosome _____ have a role in male sex determination in drosophila -
does not
the Y chromosome _____ have a role in FEMALE sex determination in drosophila -
does not
the Y chromosome _____ have a role in male sex determination in humans - does
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