The document summarizes key concepts about genetics and inheritance including:
1) Chromosomes condense during cell division and offspring inherit chromosomes from parents, containing DNA from the mother and father.
2) In humans there are 46 chromosomes in each cell organized into 23 chromosome pairs.
3) Genes can have more than two alleles that are codominant or recessive and determine blood type or other traits.
4) Mutations in sperm, egg or offspring can cause genetic disorders but some mutations may be beneficial for survival in the environment.
Heredity - Genes, Chromosomes, Solving a Punnett Square and Non-Mendelian Inh...Rolly Franco
This presentation is suited for Grade 9 - Science for the topics about genes, chromosomes, solving punnett square and Non-Mendelian Inheritance(Co-dominance, incomplete dominance, multiple allelles and sex-related traits.
Heredity - Genes, Chromosomes, Solving a Punnett Square and Non-Mendelian Inh...Rolly Franco
This presentation is suited for Grade 9 - Science for the topics about genes, chromosomes, solving punnett square and Non-Mendelian Inheritance(Co-dominance, incomplete dominance, multiple allelles and sex-related traits.
it is possible to have more than two allelic forms, i.e., multiple alleles, of one kind of gene.
The best examples of multiple allelic system have been observed in coat colour of rabbits, wings of Drosophila and blood groups in man
allelomorphs, monohybrid cross dihybrid cross mutant alleles
wild type
Chapter 15: Chromosomal Basis of InheritanceAngel Vega
KEY CONCEPTS
15.1 Morgan showed that Mendelian inheritance has its physical
basis in the behavior of chromosomes: Scientific inquiry
15.2 Sex-linked genes exhibit unique patterns of inheritance
15.3 Linked genes tend to be inherited together because they are located near each other on the same chromosome
15.4 Alterations of chromosome number or structure cause
some genetic disorders
15.5 Some inheritance patterns are exceptions to standard
Mendelian inheritance
it is possible to have more than two allelic forms, i.e., multiple alleles, of one kind of gene.
The best examples of multiple allelic system have been observed in coat colour of rabbits, wings of Drosophila and blood groups in man
allelomorphs, monohybrid cross dihybrid cross mutant alleles
wild type
Chapter 15: Chromosomal Basis of InheritanceAngel Vega
KEY CONCEPTS
15.1 Morgan showed that Mendelian inheritance has its physical
basis in the behavior of chromosomes: Scientific inquiry
15.2 Sex-linked genes exhibit unique patterns of inheritance
15.3 Linked genes tend to be inherited together because they are located near each other on the same chromosome
15.4 Alterations of chromosome number or structure cause
some genetic disorders
15.5 Some inheritance patterns are exceptions to standard
Mendelian inheritance
Genes, Chromosomes, and Genetic Code: Relevance and ImplicationsJen Gragera
Genes are the thing that determines your unique traits from the inside out. They play an important role in your overall health but they can also make you more susceptible for certain health problems and diseases, in the first place those that run in your family. Most diseases are a result of a combination of multiple factors including dietary, lifestyle and environmental factors. However, it is also possible to develop health problems exclusively due to genetic abnormalities and mutations.
Multiple Alleles, Sickle Cell Evolution, Pedigrees, & Sex Linkage
1. As a cell prepares to divide the DNA becomes condensed into compact structures called chromosomes (chromo = colored, somes = bodies) Offspring get DNA from parents by inheriting chromosomes!!!
2.
3. In humans, each body cell has 46 chromosomes in 2 sets (23 pairs) One set of chromosomes come from the mother and one set comes from the father
4. There can be more than two alleles for a gene! Human Blood Type has three alleles: A, B, and i AB are codominant, while i is recessive to both A and B Genotype Phenotype AA A Ai A BB B Bi B ii O AB AB More Complexity
6. If a mutation occurs in a sperm or egg, it may be transmitted to offspring If that mutation has a negative effect on the phenotype of an organism, the mutant condition is referred to as a genetic disorder (hereditary disease) BUT, not all mutations are harmful!!! Some mutations may make an individual better adapted to its environment, improving its chances for survival