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biology Ch. 13 Notes Part b Evolution
biology Ch. 13 Notes Part b Evolution

... o   less common #’s go up from greater food 13.16 Explain what is meant by neutral variation. ✍   Mutations that have no effect, + or -, on the individual ✍   Mutation occurs in __________ region of DNA ✍   Occurs but doesn’t change ___________ significantly 13.17 Give four reasons why natural selec ...
Week 5 - Cloudfront.net
Week 5 - Cloudfront.net

Biology_ch_11_genetics - Miami Beach Senior High School
Biology_ch_11_genetics - Miami Beach Senior High School

...  The genes for many traits are passed down in families from parents to children.  Because you come from two parents, each parent will provide one half of your genes for any trait. That is called an "allele." So you have two alleles for each gene, one from each parent. ...
Presentation
Presentation

... both parents. c. The disorder is sex linked and inherited only from the father. d. The disorder could occur only as a mutation in the child because neither parent ...
4.3 Theoretical Genetics - wfs
4.3 Theoretical Genetics - wfs

... • Genes on the non-homologous region of the X chromosome are said to be sex linked. • Phenotypes associated with recessive alleles are more common in males • The recessive allele (a) is found on the nonhomologous region of the X-chromosome. • Males only get one allele for this gene. • Males have a 5 ...
Ertertewt ertwetr - Campbell County Schools
Ertertewt ertwetr - Campbell County Schools

... A Punnett Square can be used to show how the various crossed traits will combine to form offspring. A Punnett Square can also show the probability of each outcome. Important terms Homozygous – organisms have 2 identical alleles for a particular trait (TT for 2 dominant alleles or tt for 2 recessive ...
Slide 1
Slide 1

... Type AB ...
mendelian genetics vocabulary
mendelian genetics vocabulary

Human Genetics Notes
Human Genetics Notes

... maintain muscle growth. Eventually the chest muscles deteriorate causing breathing difficulties. These difficulties lead to respiratory infections which continue until the process takes the life of the child. ...
Heredity
Heredity

... Which allele is dominant according to Mendel’s data? Answer: the tall allele is dominant Which allele is recessive according to Mendel’s data? Answer: the short allele is recessive The F1 plants are called hybrids Hybrid – an organism that has two different alleles for a trait Probability – a number ...
Patterns of Gene Inheritance
Patterns of Gene Inheritance

...  Certain traits follow the rules of simple Mendelian inheritance (i.e., dominant-recessive type of inheritance), but other inheritance patterns exist for many traits Multiple Alleles: more than two alleles control a particular trait For example: blood type  Blood types: A, B, AB, and O are phenoty ...
PPT File - Holden R
PPT File - Holden R

... – Examples of external factors include light, temperature, infectious agents and nutrition • For example the artic fox has brown fur when it is warm and white fur when it is cold to help them blend in with their surroundings ...
7.2 Complex Patterns of Inheritance PPT
7.2 Complex Patterns of Inheritance PPT

Adaptation and Evolution
Adaptation and Evolution

Genetics
Genetics

... • Since the dominant gene will be expressed, they are said to be heterozygous dominant ...
Understanding dominance/semi-dominance/co
Understanding dominance/semi-dominance/co

... dominance/semi-dominance/co-dominance/recessive relationships between alleles. Point: The relationship between alleles can be determined by examining the phenotype of the heterozygote in comparison to the phenotype of the two homozygotes. Key: The phenotype of the heterozygote: 1- is the same as one ...
quantifying genetic change
quantifying genetic change

... white-spotted (AA), 138 are intermediate (Aa) and 5 have little spotting (aa) Determine the frequency of both the A and the a allele. ...
Genomic Measures of Relationship and Inbreeding
Genomic Measures of Relationship and Inbreeding

... two alleles, 0.5 chance of sharing one allele, and 0.25 chance of sharing neither allele. With two loci, the probabilities are 0.0625, 0.25, 0.375, 0.25, and 0.0625 of sharing zero, one, two, three, or four alleles, respectively. The general formula for k alleles in common with n independent loci (a ...
Introduction to Genetics
Introduction to Genetics

... a. Mendel discovered that inheritance is determined by factors that are passed from one generation to the next, called genes. i. Different forms of genes are called alleles. Each organism will have two alleles for each trait. b. Mendel also discovered the principal of dominance. Which states: some a ...
Key Terms Foldable CH. 5 Heredity
Key Terms Foldable CH. 5 Heredity

genes
genes

... dominant to the other recessive allele Dominant trait will not allow recessive trait to be displayed Example: height—tall (T) is dominant to short (t) Dominant alleles capitalized Recessive alleles lower case ...
Introduction to Genetics
Introduction to Genetics

... a. Mendel discovered that inheritance is determined by factors that are passed from one generation to the next, called genes. i. Different forms of genes are called alleles. Each organism will have two alleles for each trait. b. Mendel also discovered the principal of dominance. Which states: some a ...
ExamView Pro - Genetics Final Exam.tst
ExamView Pro - Genetics Final Exam.tst

... 28. The offspring of a ____________________ plant will always have the same alleles for a trait as the parent. 29. Mendel used ____________________-pollination to produce purebred plants. 30. If a ____________________ allele is present, its trait will appear in the organism. 31. In pea plants, the t ...
Population Genetics - Bev Facey Community High
Population Genetics - Bev Facey Community High

... • Gene pool  all the alleles of all the genes of all the individuals in a population • Evolution  cumulative changes in the gene pool (and therefore changes in characteristics of populations) of organisms from one generation to the next ...
DNA - Glen Ellyn School District 41
DNA - Glen Ellyn School District 41

... • The gene make up of a specific trait. • These are the LETTERS we assign to the trait! ...
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Inbreeding

Inbreeding is the sexual reproduction of offspring from the mating or breeding of individuals or organisms that are closely related genetically. By analogy, the term is used in human reproduction, but more commonly refers to the genetic disorders and other consequences that may arise from incestuous sexual relationships and consanguinity.Inbreeding results in homozygosity, which can increase the chances of offspring being affected by recessive or deleterious traits. This generally leads to a decreased biological fitness of a population (called inbreeding depression), which is its ability to survive and reproduce. An individual who inherits such deleterious traits is referred to as inbred. The avoidance of such deleterious recessive alleles caused by inbreeding, via inbreeding avoidance mechanisms, is the main selective reason for outcrossing. Crossbreeding between populations also often has positive effects on fitness-related traits.Inbreeding is a technique used in selective breeding. In livestock breeding, breeders may use inbreeding when, for example, trying to establish a new and desirable trait in the stock, but will need to watch for undesirable characteristics in offspring, which can then be eliminated through further selective breeding or culling. Inbreeding is used to reveal deleterious recessive alleles, which can then be eliminated through assortative breeding or through culling. In plant breeding, inbred lines are used as stocks for the creation of hybrid lines to make use of the effects of heterosis. Inbreeding in plants also occurs naturally in the form of self-pollination.
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