The diagnosis of Down Syndrome is made by examining the individuals?
Karyotype
Chromosome abnormalities result from nondisjunction, illustrating the importance of?
The orderly separation and distribution of genetic material during Meiosis I
Genetic recombination occurs during?
The prophase of Meiosis I
Many chromosome abnormalities are not involved in the human population because?
They are lethal and can cause spontaneous abortion of the embryo in early development
Trisomy and monosomy can result from accidents that occur during meiosis during?
Nondisjunction of chromosomes
Half of babies are born male and half female because?
Segregation of the X and Y chromosome during male meiosis
200 alleles exist in the population yet each persons has at most?
2 alleles per trait
The optimal time to observe size and shape of chromosomes is during?
Metaphase
A person with Klinefelters Syndrome has YY chromosomes and 3 sex chromosomes (XXY), the resulting aniplody is caused by?
Nondisjunction
Half of all human cancers have___associated with their cells
P53
Sex in humans is determined by a gene called___on the __chromosome
SRY
Y
A linkage group corresponds to a?
Group of genes on the same chromosome
Down syndrome is caused by an extra?
21st chromosome
Recombination is most likely between 2 loci that are?
Far apart
Nondisjunction is caused by the production of ______cells
chromosomes that don’t seperate
