Flashcards
mcolby Meiosis Test
Cards in this deck (25)
- 1During meiosis, the number of chromosomes per cell is cut in half through the separation of ?homologous chromosomes.
- 2What are homologous chromosomes?Chromosomes that are the same size and have the same genes in the same location
- 3What is meiosis?The name of the process in which a woman produces eggs and a male produces sperm.
- 4What happens during meiosis?When, in a diploid cell, the number of chromosomes per cell is cut in half, through the separation of homologous chromosomes,
- 5What is the end result of meiosis?4 haploid gamete cells
- 6What is an allele? Come up with an examplea different form of a gene
Gene= eyes
Allele= brown, blue, green - 7What happens to the chromosome number during meiosis?It halves: the cell becomes a haploid cell
- 8What is a genotype and how is it expressed?The genetic make up of an organism....expressed using lower and capital letters letters
FgBB - 9Different forms of a gene are called?alleles
- 10What is a Phenotype and how is it expressed?The characteristic of appearance of an organism expressed using words: yellow fur, green fur, blue eyes
- 11What is a homologous Chromosome?Chromosomes that are the same size and have the same genes
- 12What is a diploid cell? What is an example?A diploid cell is a cell that contains all of the chromosomes for that particular organism. Example: human genome contains 23 pairs of chromosomes, or 46
- 13Are the gametes from a male or female all identical and all the same? or are they all unique and different?Unique and different
- 14What is the main difference between meiosis and mitosis?The difference is that during the process of mitosis, one cell separates into two identical diploid cells, and in the process of meiosis one cell separates into 4 unique haploid gamete cells
- 15Draw a diagram of mitosis.
- 16Draw a diagram of meiosis.
- 17How do chromosomes exchange genetic information?crossing over
- 18what is non disjunction?When chromosomes do not separate correctly which can lead to genetic disorders
Example: down syndrome - 19What is the significance of meiosis?increases genetic variation
- 20What does the process of fertilization result in?A diploid, zygote cell, that due to sperm meeting egg, has a new combination of genetic material
- 21Crossing over in meiosis is an exchange of genetic material between?Homologous chromosomes
- 22How does "crossing over" happen and what is its significance?Crossing over is a random event, and it results in increased diversity of gametes and therefore offspring
- 23what is independent assortment?refers to a random way in which chromosomes line up during metaphase I and metaphase II of meiosis, in order to produce diverse gametes
- 24Why is the Independent assortment named independent?Because the way that one pair of homologous Chromosomes lines up does NOT affect the way that other pairs line up. Chromosomes line up "Independently"
- 25What does Fertilization restore and what does it allow for?Fertilization restores the original number of chromosome pairs and reshuffles the genetic information, allowing for variation among offspring
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- Flashcards for Colby Meiosis Unit Test
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- Melinda Colby
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