Genetics - Mitosis, meiosis and chromosome abnormalities Flashcards
how many autosomes are found in a human cell
a. 23
b. 46
c. 44
d. 2
c.44
the light section of a chromosome is made up of
a. eurochromatin
b. heterochromatin
c. teleomeres
a.eurochromatin
what is the shorter arm of a chromosome known as
a. p arm
b. q arm
a. p arm
a nucleosome is DNA wrapped around how many histone proteins?
a. 2
b. 3
c. 7
d. 8
d.8
chromatin is a network of DNA and proteins that make up chromosomes during which phase of mitosis
a. anaphase
b. prophase
c. interphase
c.interphase
what substance is highly condensed, genetically inactive and found at centromeres
a. nucleosomes
b. chromatin
c. heterochromatin
d. eurochromatin
c.heterochromatin
what is the lighter staining, relatively open structure where genes may be accessed and are active known as
a. nucleosomes
b. chromatin
c. heterochromatin
d. eurochromatin
d.eurochromatin
what is chromosome classification based on ?
a. centriole position
c. telomere position
d. centromere position
d.centromere position
autosomes are labelled 1-22 according to what
a. genetic material volume
b. biological activity
c. size
c. size
which chromosome is the smallest
a. 1
b. 2
c. x
d. y
d.y
in what phase of the cell cycle does mitosis occur?
a. interphase
b. m phase
b.m phase
crossing over is more likely to happen between genes that are…
a. close together
b. far apart
b.far apart
when a cell is not actively dividing it contains ..
a. chromatin
b. chromosomes
a.chromatin
chromosome nomenclature
chromosome involved, arm, band position
developmental delay, multiple organ systems affected and dysmorphism is indicative of what
a. chromosome abnormality
b. genetic condition
a.chromosome abnormality
