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Terms in this set (29)
compared with normal hemoglobin, the hemoglobin of a person with sickle cell disease appears?
has a different sequece of amino acid.
sickle cell disease is caused by a?
small change in dna of a single gene.
What conditions in the chapter are determined by multiple alleles?
ABO blood group.
What human genetic disease conditions are caused by a dominant allele?
in a pedigree, a circle represents a?
human females have eggs with what sex chromosome?
what are the sex chromosomes of a human male?
how many chromosomes are in a normal human karyotype?
the purpose of gene therapy is to?
cure genetic disorders
the human genome project is an attempt to
sequence all human dna
scientists test for alleles that cause human genetic disorders by making?
dna sequences found in those alleles
the failure of chromosomes to seperate during meiosis is called?
what form barr bodies?
x chromosomes in female cell
sex-linked genes are located on?
x and y chromosomes
the sequencing of human chromosomes 21 and 22 showed that?
some regions of chromosomes dont code for proteins
a diagram that follows the inheritance of a single gene through several generations is called a?
a person with the alleles ii has blood type?
what disease is it when a person is unable to break down the amino acid phenylalanine?
the human genes associated with color vision are located on what chromosome?
what process replaces a faulty gene with a normal working gene?
why did scientists expect that humans would have more genes than they actually do?
because they have more dna due to their complexity.
why do scientists use sections of dna that have little or known function to do dna fingerprinting?
those sections of dna vary widely from person to person
why are barr bodies not found in most male cells?
most male cells dont have 2x chromosomes
why are all x-linked alleles expressed in males, even if they are recessive?
males only have on x chromosome
how is the dna sequence of the allele that causes cystic fibrosis different from that of the normal allele?
missing 3 nucleotides
in the karyotype what are the chromosomes in each numbered group called?
in a human karyotype what is the normal number that should be shown?
what are the autosomes?
all chromosomes except sex chromosomes
homologous chromosomes are similar in what aspects?
size and shape
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