Mitosis
This is the first phase of mitosis where chromatin condenses into chromosomes.
What is prophase?
The phase where homologous chromosomes pair up and crossing over occurs.
What is prophase I
This is a major advantage of asexual reproduction—it happens very...
What is quickly (or rapidly)?
DNA is shaped like this twisted structure.
What is a double helix?
All living things are made up of these.
What are cells?
This is the stage of mitosis, where two new nuclear envelopes form.
What is telophase?
The name for chromosomes that are similar in size and carry genes for the same traits.
What are homologous chromosomes?
In this type, one cell divides into two equal daughter cells.
What is binary fission?
These are the building blocks of DNA.
What are nucleotides?
All cells come from these.
What are pre-existing cells?
These structures pull chromosomes apart during mitosis.
What are spindle fibers?
The term for the number of chromosomes in a gamete.
What is haploid (n)?
Flatworms like planaria can regrow body parts through this process.
What is regeneration?
Adenine pairs with this base in DNA.
What is thymine?
This scientist said all plants are made of cells.
Who is Matthias Schleiden?
These structures, made of DNA and protein, are visible during mitosis.
What are chromosomes?
Organisms use meiosis primarily for this purpose.
What is sexual reproduction?
In this rare form of asexual reproduction, some animals like certain reptiles can produce offspring without fertilization.
What is parthenogenesis?
The sugar found in DNA nucleotides.
What is deoxyribose?
He improved the microscope and was the first to see living cells, which he called “animalcules.”
Who is Anton van Leeuwenhoek?
The main purpose of mitosis in multicellular organisms is for these three processes.
What are growth, repair, and maintenance?
Random alignment of chromosomes in metaphase I leads to this source of variation.
What is independent assortment?
Strawberry plants reproduce asexually by growing these horizontal stems.
What are runners (or stolons)?
The sequence of these in DNA determines the traits of an organism.
What are nitrogenous bases (or bases)?
He concluded that all cells come from pre-existing cells.
Who is Rudolf Virchow?