1 Flashcards
Where are the chromosomes found in the cell?
in the nucleus
How many different bases are there in a DNA molecule?
four
Which statement about DNA is correct?
Thymine (T) pairs with adenine (A)
What are the different forms of a gene called?
alleles
Which statement about mitosis is correct?
it produces daughter cells with the same number of chromosomes as the parent cell
As a result of mitosis, how many cells are produced?
two
As a result of meiosis, how many cells are produced?
four
Which type of cell division produces genetically identical daughter cells?
mitosis
What happens during meiosis?
gametes are formed, each with a single set of chromosomes
Which statement about human cells is correct?
the haploid number of chromosomes is 23 and the diploid number is 46
Which statement is true of genes?
a gene is a short section of dna that codes for a protein
How many chromosomes does a human have in each body cell?
46 pairs
Which statement is correct about the cells produced by mitosis?
two daughter cells are produced, each has the same number of chromosomes as the parent cells
What happens in the stage that is before mitosis in the cell cycle?
a period of growth, during which time DNA is checked for errors
The cell begins to tear; chromatids become threadlike again, nuclear membrane forms around each creating two new nuclei, and the spindle fibers disappear. This stage is called?
telophase
Cell division where the cell divides twice is called?
meiosis
Inherited genetic material is referred to as?
DNA
All sperm and oocytes are completely different from one another. This concept is known as?
genetic variety
Leg parts of a chromosome are called?
chromatid
Chromatin coils and condenses, forming chromosomes during which stage?
prophase
The nuclear envelope re-forms during which stage?
telophase
The chromosomes are V-shaped during which phase?
anaphase
DNA synthesis occurs during which phase?
interphase
Chromosomal centromeres are attached to the kinetochore fibers during which phase?
metaphase