What gender is XX female
What gender is XY male
What type of sex chromosome does a human female egg produce
? # chromosomes are in a normal human karyotype 46
? # autosomes in a normal human karyotype 44
What chromosomes are sex-linked genes located on X and Y
What is the failure of chromosomes to separate during meiosis called nondisjuntion
What chromosome has vital normal development genes X
Has any baby ever been born without an X chromosome No
If _________ happens during meiosis, some gametes may have an extra copy of a gene nondisjuntion
If nondisjuntion occurs during meiosis, some gametes may have an extra copy of what? Some genes
What project is an attempt to sequence the DNA of every human gene? Human Genome
More than 40% of the proteins coded for in the human genome are similar to proteins found where? other organisms
What is the probability that a human offspring will be male? 50
What is the probability that a human offspring will be female? 50
What % of human sperm carry an X chromosome? 50
What % of human sperm carry a Y chromosome? 50
Is colorblindness more common in males or females
Is colorblindness dominant or recessive?
Which chromosome is colorblindness located on X
Which chromosome may form Barr bodies X On what gender? a female
If Dd is heterozygous dominant, what is dd Homozygous recessive
Has at least one recessive trait (heterozygous) If a child expresses recessive, what do you know about each parent (both parents express dominant) Has at least one recessive trait (heterozygous)
how many generations are shown in the pedigree 3
What is your genotype if your phenotype is not dominant Homozygous recessive
When during a persons life would Huntington’s disease symptoms appear late
What is sickle cell disease caused by Change In 1 allele
What does hemoglobin in red blood cells do? Carry oxygen
Generally healthy; some normal hemoglobin in red blood cells What would be the affect of a person who is heterozygous for sickle cell Generally healthy; some normal hemoglobin in red blood cells