Cell Division/Cystic Fibrosis Genetics Case Study Flashcards
Where does mitosis occur?
eukaryotic cells, somatic/body cells
Function of mitosis
growth of organism, replace/repair old cells
Number of cell divisions in mitosis?
one
Number of cells produced in mitosis?
two
Are mitosis cells diploid or haploid?
diploid
Are mitosis cells identical or unique?
identical
Where does meiosis occur
reproductive organs (ovaries and testes)
Function of meiosis cells/sex cells
reproduction/genetic diversity
Number of cell divisions in meiosis?
two
number of cells produced in meiosis
four
Are meiosis cells diploid or haploid?
haploid
Are new cells in meiosis genetically identical or unique?
unique
sister chromatid
chromosome copies attached at their centromere
homologous chromosome
chromosome that are the same size and shape
when does replication occur?
interphase
What does it mean for Nancy to be a carrier for cystic fibrosis? Why is Nancy not concerned for her health?
This means Nancy has a heterozygous gene for cystic fibrosis (Ff); she does not display the disease, only carries it in her genetic makeup
Why would Nancy be concerned for her child’s health if she is a carrier for cystic fibrosis?
Although being a carrier means you do not display the medical condition yourself, it means there is a chance that the medical condition could be passed onto your children (depending on the genes of your partner)
Why should Jake, Nancy’s partner, be tested for the CF gene?
He could be a possible carrier, increasing the chances that children with Nancy could result in a child with cystic fibrosis.
When is DNA replicated?
Interphase I
When does crossing over occur?
prophase I
When do homologous chromosomes separate?
anaphase I
When do sister chromatids separate?
anaphase II
What trait must have two alleles to be expressed?
recessive traits
