Human Genetics Flashcards
What are somatic cells?
body cells
How many chromosomes do somatic cells have?
46 chromosomes
What are gametes?
sex cells
How many chromosomes do gametes have?
23
Chromosome number 1-22 are called? Number 23 is called?
autosomes, sex chromosome
What are the genotypes of a male and female?
XY, XX
Who determines the sex of the child?
father
What is a sex-linked trait? Who usually shows these types of traits?
genes carried on sex chromosomes, x chromosome (males)
What are examples of sex linked traits?
hemophilia , H = normal h + hemophilia
What is a karyotype?
picture of all the chromosomes of an individual
What is Down Syndrome? What is it the result of?
non-disjunction, Trisosomy 21
What is a pedigree? What are the symbols used on a pedigree and what do they represent?
chart that shows genetic history, sequence circle, shaded circle etc
