1. What are traits?
a) Interactions with an individual's environment.
b) Characteristics and qualities that make us who we are.
c) Grey areas between two extremes.
d) People with brown hair and blue eyes.
2. When would a recessive trait be seen in an organism?
a) When there is one dominant and one recessive gene for the trait present in the offspring.
b) When there are two dominant genes for the trait of the present in the offspring.
c) When there are two recessive gene for the trait of the present in the offspring.
d) Never.
b) When there is one dominant and one recessive gene for the trait present in the offspring.
1. What are traits?
a) Interactions with an individual's environment.
b) Characteristics and qualities that make us who we are.
c) Grey areas between two extremes.
d) People with brown hair and blue eyes.
b) Characteristics and qualities that make us who we are.
1. What is hereditary?
2. What do we call the shape or arrangement of a strand of DNA?
3. How many chromosomes do we have? Where do these chromosomes come from?
1. Hereditary refers to the passing of traits or characteristics from parents to offspring through genetics.
2. The shape or arrangement of a strand of DNA is called a double helix.
3. Humans typically have 46 chromosomes (23 pairs). These chromosomes come from both parents, with 23 chromosomes inherited from the mother and 23 from the father.
1. What are traits?
2. What are DNA and genes?
3. What are proteins?
4. What is inheritance?
5. What is mutation?
1. Traits are characteristics or attributes that can be observed in individuals, such as physical features, behaviors, or genetic predispositions.
2. DNA (deoxyribonucleic acid) is a hereditary material found in all living organisms. Genes are segments of DNA that contain instructions for the development and functioning of an organism.
3. Proteins are large biomolecules made up of amino acids. They play crucial roles in various biological processes, including cell structure, enzymatic reactions, and regulation of gene expression.
4. Inheritance refers to the passing of traits or genetic information from one generation to the next.
5. Mutation is a change in the DNA sequence of a gene. It can occur naturally or be induced by various factors and can lead to alterations in the genetic information, potentially resulting in new traits or diseases.
whats the purpose of a gene?
The purpose of a gene is to store the instructions for building and regulating proteins. Genes serve as the basic units of heredity and contain the information that determines an organism's traits and characteristics. They are involved in various biological processes, including development, growth, metabolism, and response to the environment. Genes play a crucial role in determining an organism's physical features, behaviors, and susceptibility to certain diseases.
how is dna different that chromosones
?
DNA and chromosomes are related but different structures within cells.
DNA, or deoxyribonucleic acid, is a molecule that carries the genetic information in all living organisms. It is a long, double-stranded molecule that stores genetic instructions in the form of a code made up of four nucleotides (adenine, thymine, cytosine, and guanine). The sequence of these nucleotides provides the instructions for building and functioning of an organism.
Chromosomes, on the other hand, are structures formed by DNA and proteins. They are thread-like structures found within the nucleus of cells. DNA molecules wrap around proteins called histones and condense, forming highly organized, compact structures known as chromosomes. Chromosomes are visible during cell division when they become tightly coiled and can be seen under a microscope.
In summary, DNA is the genetic material that carries the instructions for building an organism, while chromosomes are structures that contain the DNA molecules tightly coiled and condensed within the nucleus of cells.
whats the difference from dominant trait and a recessive trait?
The difference between a dominant trait and a recessive trait lies in how they are expressed in an organism's phenotype.
A dominant trait is one that is expressed or observed when an individual has at least one copy of the dominant allele (gene variant) in their genotype. In other words, the presence of a dominant allele overrides the expression of the corresponding recessive allele. It means that even if an individual has only one copy of the dominant allele, it will be sufficient to show the dominant trait in their physical appearance.
On the other hand, a recessive trait is one that is observed only when an individual carries two copies of the recessive allele. It means that if an individual has two copies of the recessive allele, one from each parent, the recessive trait will be visible. However, if an individual has one copy of the dominant allele and one copy of the recessive allele, the dominant trait will be expressed, and the recessive trait will not be visible.
In simple terms, the dominant trait "dominates" over the recessive trait in terms of expression.