Genetics Final - Richard O'Neill - Massasoit CC

Phenotype

Refers to the observable characteristics or traits of an organism, resulting from the interaction between its genetic makeup and environmental influences. Physical traits like hair color, eye color, height, etc

Genotype

Refers to the genetic makeup of an organism, which includes all of its genes and alleles. It is like the instruction manual for an organism, containing the information that determines its physical and biochemical characteristics

Genetics

A branch of biology that deals with the study of genes, heredity, and variation in organisms. It explores how traits are passed from parents to offspring through the transmission of genetic information encoded in DNA molecules. Involves the mechanisms of inheritance, genetic variation within populations, and the role of genetics in evolution and disease.

Genes

Composed of segments of DNA (deoxyribonucleic acid) that encode instructions for the synthesis of proteins or functional RNA molecules. These instructions determine specific traits or characteristics of an organism, such as eye color, height, or susceptibility to certain diseases.

Gamete

A specialized reproductive cell that fuses with another (blank) during sexual reproduction to form a new organism. In animals, gametes are commonly referred to as sperm cells and egg cells. They are haploid cells, meaning they contain only one set of chromosomes, which is half the number of chromosomes found in somatic cells (body cells).

Genomics

The study of an organism's entire genome, which is the complete set of DNA, including all of its genes and non-coding sequences. It encompasses a wide range of techniques and approaches aimed at understanding the structure, function, evolution, and regulation of genomes.

Bioethics

It addresses complex moral questions and dilemmas arising from biomedical research, healthcare practices, and the use of biotechnology. It aims to provide frameworks for ethical decision-making and policy development in areas such as medical treatment, reproductive technologies, genetic engineering, and end-of-life care.

Probability

It is a measure of the likelihood or chance that a particular event will occur. It is expressed as a number between 0 and 1, where 0 indicates impossibility (the event will not occur), 1 indicates certainty (the event will occur), and values in between represent varying degrees of likelihood.

Punnett square

A graphical tool used to predict the possible outcomes of a genetic cross between two individuals

Haploid

Refers to a cell or organism that has a single set of chromosomes, rather than the usual paired set found in diploid cells. In these organisms or cells, each chromosome exists in only one copy. They are produced during a specialized type of cell division called meiosis, which occurs in the reproductive organs of sexually reproducing organisms.

Homozygous

Refers to the condition in which an individual has two identical alleles for a particular gene. Alleles are different forms of a gene that can produce variations in a trait. In a (Blank) individual, both alleles at a specific gene locus are the same

Heterozygous

Refers to the condition in which an individual has two different alleles for a particular gene. Alleles are different forms of a gene that can produce variations in a trait. In a heterozygous individual, the alleles at a specific gene locus are different.

Mutations

Refer to changes or alterations in the sequence of nucleotides that make up the DNA molecule. They can occur in various ways and can affect individual genes, entire chromosomes, or even the entire genome of an organism. They can have a wide range of effects, from no noticeable change to significant alterations in the structure, function, or regulation of genes

Pathogen

Any organism or agent that can cause disease in another organism. They include a wide range of microorganisms, such as bacteria, viruses, fungi, protozoa, and parasites, as well as prions (infectious proteins) and viroids (subviral particles). They can infect humans, animals, plants, and even other microorganisms. These can also make or break agriculture.

Antigen

A substance that is capable of inducing an immune response in the body, particularly by activating the production of antibodies. They are typically foreign substances, such as proteins, polysaccharides, or other molecules, that are recognized as "non-self" by the immune system. However, some (blank) can also be produced by the body itself and may become targets of the immune response in autoimmune diseases.

Frameshift mutation

Is a type of genetic mutation that occurs when the insertion or deletion of nucleotides in the DNA sequence changes the reading frame of the gene during translation. In normal circumstances, the genetic code is read in groups of three nucleotides called codons, each of which codes for a specific amino acid or serves as a start or stop signal for protein synthesis. (Blank) disrupts this reading frame by shifting the triplet codon sequence, resulting in the incorrect grouping of nucleotides into codons.

Nonsense mutation

Is a type of genetic mutation that leads to the premature termination of protein synthesis during translation. This occurs when a point mutation (a change in a single nucleotide base) in the DNA sequence creates a premature stop codon (also known as a nonsense codon) within the protein-coding region of a gene.

Point mutation

A type of genetic mutation that involves a change in a single nucleotide base within the DNA sequence of a gene. Can occur in various ways, such as substitution, insertion, or deletion of a single nucleotide.

Cancer

Uncontrolled growth and spread of abnormal cells in the body. These abnormal cell scan invade nearby tissues and organs and spread to other parts of the body through the bloodstream or lymphatic system, a process known as metastasis.

Metastasis

A process in which cancer cells spread from the primary tumor to other parts of the body, forming secondary tumors or lesions. This spread occurs through the bloodstream or lymphatic system, allowing cancer cells to invade distant tissues and organs and establish new tumor growths.

Phenotype frequency

Refers to the proportion or percentage of individuals in a population that exhibit a particular observable trait or phenotype. In genetics, (Blank) is often used to describe the prevalence of specific physical characteristics or traits within a population.

Allele frequency

Refers to the proportion or percentage of a particular allele within a population's gene pool. An (Blank) is one of two or more alternative forms of a gene that can occupy the same position, or locus, on a chromosome. (Blank) is a measure of how common or rare a specific (Blank) is within a population.

 

Microevolution

Refers to the small-scale changes in allele frequencies and traits within populations over relatively short periods of time

Macroevolution

The study of evolutionary patterns and processes that occur over long periods of time, typically encompassing millions of years, and result in the diversification of life forms, the origin of new species, and the emergence of major evolutionary innovations

Traits

Are observable characteristics or attributes of an organism, which are typically influenced by genes and the environment. These characteristics can encompass a wide range of physical, physiological, and behavioral features that contribute to an organism's appearance, function, or behavior.

Alleles

Crucial for genetic diversity and inheritance patterns within populations. They provide the basis for variation in traits among individuals and play a central role in evolutionary processes such as natural selection, genetic drift, and gene flow.

Dominant

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Refers to the relationship between alleles of a gene that determines the expression of a trait in the phenotype of an organism. (Blank) alleles are those that are expressed in the phenotype when present, even if only one copy is inherited (heterozygous condition). They typically mask the expression of recessive alleles when both are present in a heterozygous individual.

Recessive

Refers to the relationship between alleles of a gene, where the expression of a trait requires the presence of two copies of the recessive allele (homozygous condition). (Blank) alleles are only expressed in the phenotype when they are present in this homozygous state and are not masked by dominant alleles.

Codominant

Refers to a relationship between alleles of a gene in which both alleles are fully expressed in the phenotype of heterozygous individuals. Unlike in (blank) relationships, where one allele masks the expression of the other, in (Blank), neither allele is dominant over the other, and both contribute to the phenotype.

Incomplete dominance

A genetic phenomenon in which neither allele of a gene is completely dominant over the other, resulting in an intermediate phenotype in heterozygous individuals. In other words, in (Blank), the heterozygous phenotype is a blending or mixture of the phenotypes associated with the two homozygous genotypes.

Pedigree

A diagrammatic representation of a family's genetic history over multiple generations, typically used to track the inheritance of traits or genetic disorders. They are commonly used in genetics to analyze patterns of inheritance, identify carriers of genetic diseases, and assess the risk of passing on genetic conditions to offspring.

Genetic engineering

A field of biotechnology that involves the manipulation of an organism's genetic material, typically DNA, to modify its characteristics or introduce new traits. This can be achieved through various techniques, including gene cloning, gene editing, and recombinant DNA technology.

Blood typing

A medical procedure used to determine the specific blood type of an individual based on the presence or absence of certain antigens on the surface of red blood cells and antibodies in the blood plasma. The main types are: A, B, AB, and O.