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45 Cards in this Set

  • Front
  • Back
Which disease is most likely non-disjuntive during meiosis?
down syndrome
which genetic defect is correlated with the age of the mother?
down syndrome
if a woman has blood type AB and a man has blood type O, what possible combinations could their children be?
A or B
what pattern of sex chromosome do people with Klinefelter syndrome have?
XXY
what pattern of sex chromosome do people with Turner Syndrome have?
XO
eye color and height are traits that demonstrate...
polygenic inheritance
which of the following is true of mitosis:
a.Mitosis leads to the formation of four haploid cells
b.Mitosis occurs during the S phase of the cell cycle
c.Mitosis starts with tetrad formation
d.Mitosis occurs in germ cells but not somatic cells
e. mitosis leads to the formation of 2 identical daughter cells.
e. mitosis leads to the formation of 2 identical daughter cells.
what cellular machinery is responsiible for the seperation of the chromosomes?
spindle fiber
what cellular machinery is responsible for protein synthesis?
ribosomes
what is found in DNA but not RNA?
thymine
inheritance of ABO blood types in humans demonstrates
-multiple allelism
-codominance
-complete dominance
what are examples of CODOMINANCE
-MN blood groups
-sickle cell anemia
what are examples of MULTIPLE ALLELES
-ABO blood groups
which pedigree analysis is inherited in every generation?
autosomal dominant
which pedigree analysis skips a generation?
autosomal recessive
which pedigree analysis goes from father to daughter to grandson?
x-linked recessive
protein ---> RNA
translation
DNA ---> DNA
replication
RNA ----> DNA
transcription
adenine =
thymine
guanine =
cytosine
how many phenotypes does the F1 generation demonstrate?
1
what happens to the masked phenotype
it appeare unaltered in the F2 generation
how many genetically distinct gametes does each parent form in a dihybrid cross?
4
ratio 1 red: 2 pink: 1 white
incomplete dominance
what are sex linked traits
traits located on the same chromosome, majority are x-linked
what is an example of sex-influenced traits?
male patterned baldness
what is cytokinesis
the division of the cytoplasm into 2 daughter cells
t/f most of our cells are unreplicated
true
what inhibits cell division by ensuring the necessary cellular processes are completed before progression to the next stage of the cel cycle
tumor supressor genes
mutations in what kind of genes can lead to cancer?
tumor supressor genes
when mutates, what kind of genes produce uncontrolles proliferation of the cell
protogenes
t/f only one amino acid can be specified by a given triplet codon
true
DNA replicates during which phase?
S-phase
how many haploid cells does meiosis produce?
4
MITOSIS- chromosomes begin to condense to form the tightly coiled structures
prophase
MITOSIS- the microtubles penetrate the nuclear region and form a spindle apparatus. they attach to sister chromatids and they are lined up at the equator of the spindle
metaphase
MITOSIS- the attachments break and the chromosomes move to opposite poles of the cell
anaphase
MITOSIS- chromosomes decondense, 2 new daughter cells are formed with two of each type of chromosome
telophase
TAY SACHS
AUTOSOMAL RECESSIVE
SICKLE CELL ANEMIA
AUTOSOMAL RECESSIVE
RED-GREEN COLOR BLINDNESS
X-LINKED RECESSIVE
DOWN SYNDROME
TRISOMY 21
in meiosis ____ happens during anaphase 1 and ______ happens during anaphase 2
homologous chromosomes seperate during anaphase 1

sister chromatids seperate during anapahse 2
what pedigree analysis is rare and skips generations?
mendelian recessive