What is a chromosome example?
Each species has a characteristic set of chromosomes with respect to number and organization. For example, humans have 23 pairs of chromosomes–22 pairs of numbered chromosomes called autosomes, 1 through 22, and one pair of sex chromosomes, X and Y. Each parent contributes one chromosome of each pair to an offspring.
What is a chromosome in simple words?
(KROH-muh-some) A structure found inside the nucleus of a cell. A chromosome is made up of proteins and DNA organized into genes. Each cell normally contains 23 pairs of chromosomes.
What is a chromosome like in real life?
The definition of a chromosome is a thread-like structure of DNA (nucleic acids and proteins) that carries genes. The “X” or “Y” gene that determines whether you will be a boy or a girl is an example of a chromosome. In all eukaryotic cells, the chromosomes occur as threadlike strands in the nucleus.
What is an example of gene in a sentence?
Examples of gene in a Sentence She inherited a good set of genes from her parents.
What is gene example?
For example, if both of your parents have green eyes, you might inherit the trait for green eyes from them. Or if your mom has freckles, you might have freckles too because you inherited the trait for freckles. Genes aren’t just found in humans — all animals and plants have genes, too.
What is an example of gene flow?
Gene flow is the movement of genes from one population to another population. Examples of this include a bee carrying pollen from one flower population to another, or a caribou from one herd mating with members of another herd. Genes can come in different forms called alleles.
Can you see a chromosome?
Chromosomes are not visible in the cell’s nucleus—not even under a microscope—when the cell is not dividing. However, the DNA that makes up chromosomes becomes more tightly packed during cell division and is then visible under a microscope.
How do you describe a chromosome?
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA). Passed from parents to offspring, DNA contains the specific instructions that make each type of living creature unique.
What are examples of gene?
Genes that are passed on to you determine many of your traits, such as your hair color and skin color. Maybe Emma’s mother has one gene for brown hair and one for red hair, and she passed the red hair gene on to Emma. If her father has two genes for red hair, that could explain her red hair.
What is a gene in one sentence?
A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases.
What are some examples of chromosomes?
The definition of a chromosome is a thread-like structure of DNA (nucleic acids and proteins) that carries genes. The “X” or “Y” gene that determines whether you will be a boy or a girl is an example of a chromosome.
What is the definition of chromosomes for kids?
Kids Definition of chromosome. : one of the rod-shaped or threadlike structures of a cell nucleus that contain genes and divide when the cell divides.
What is the function of chromosomes?
Chromosomes are essential for the process of cell division and are responsible for the replication, division, and creation of daughter cells that contain correct sequences of DNA and proteins.
What is the definition of chromosome?
Definition of chromosome : any of the rod-shaped or threadlike DNA-containing structures of cellular organisms that are located in the nucleus of eukaryotes , are usually ring-shaped in prokaryotes (such as bacteria), and contain all or most of the genes of the organism also : the genetic material of a virus — compare chromatin