the gene for this type of trait is found on an sex chromosome; mostly males will exhibit this type of trait
neither allele totally masks the expression of the other allele; the offspring's phenotype will be a blend of the parents' phenotypes
a person who is heterozygous for a disorder and who does not have the disorder but can pass the disorder to offspring
one of the x chromosomes in each of the cells of female mammals is randomly turned off
men have one X and one Y chromosome--therefore there is no second X chromosome to mask the expression of a trait found on the X chromosome, whereas women have two X chromosomes
why are recessive sex-linked traits more common in men than in women?
a picture of all of the chromosomes in a cell, with homologous chromosomes paired and lined up according to size; can show the presence of extra or missing chromosomes, but does not provide information about specific genes
type of disorder in which one of the parents must display the trait in order for a child to display the trait
type of disorder that can skip a generation; both parents must carry an allele for the trait
What is the probability that two parents that are heterozygous for a dominant allele located on an autosome will produce a child that displays the dominant trait?
What is the probability that two parents that are heterozygous for a recessive allele located on an autosome will produce a child that displays the dominant trait?
your physical appearance is known as your _____, whereas the actual genes that you have are your _____
yes; Both parents would need to be heterozygous so that the child could inherit the two alleles needed for type O
Is it possible for a couple with blood types A & B to have a child that is type O? Explain
type A, type AB, or type B, depending on whether the type A parent was homozygous or heterozygous
What blood type could a child have if its parents were type AB and type A?
type A or type O (if the type A parent was heterozygous)
What blood type could a child have if its parents were type A and type O?