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Genetics Unit-- Make a Face Lab
Genetics Unit-- Make a Face Lab

... Red Hair: Red hair is another gene for hair color present on a different chromosome.It blends its effect with other hair colors. Redness of the hair seems to be caused by a single gene pair with two alleles, red (G) or no red (g), and displays incomplete dominance. Thus, if a person has two genes f ...
Natural selection
Natural selection

... Sylvia S. Mader Concepts of Biology © Zanichelli editore, 2012 ...
Types of chromosome abnormalities
Types of chromosome abnormalities

... 45,XY,der(13;14)(q10;q10): A male with a balanced Roberstonian translocation of chromosomes 13 and 14. Karyotype shows that one normal 13 and one normal 14 are missing and replaced with a derivative chromosome 46,XY,t(11;22)(q23;q22): A male with a balanced reciprocal translocation between chromosom ...
Wildlife - Manitoba Forestry Association
Wildlife - Manitoba Forestry Association

... wildlife) and all the aspects (living and non-living) of the environment. Organisms compete with other individuals for food and other resources. They also prey upon others, parasitize them, provide them food, and change their physical and chemical environment. Interactions between species can take v ...
13_Lecture_Presentation
13_Lecture_Presentation

... Inheritance of Genes • Genes are the units of heredity, and are made up of segments of DNA • Genes are passed to the next generation via reproductive cells called gametes (sperm and eggs) • Each gene has a specific location called a locus on a certain chromosome • Most DNA is packaged into chromoso ...
Chapter 13 - Cloudfront.net
Chapter 13 - Cloudfront.net

... Inheritance of Genes • Genes are the units of heredity, and are made up of segments of DNA • Genes are passed to the next generation via reproductive cells called gametes (sperm and eggs) • Each gene has a specific location called a locus on a certain chromosome • Most DNA is packaged into chromoso ...
African Love Grass - PestSmart Connect
African Love Grass - PestSmart Connect

... spreading. It continues to cause serious ecological damage within native vegetation areas including roadsides, national parks and the like where it displaces other desirable plant species. Coolatai grass is generally regarded as a weed because of its low digestibility and stock generally avoid Coola ...
Meiosis
Meiosis

... 13.3: Meiosis reduces the number of chromosome sets from diploid to haploid • Like mitosis, meiosis is preceded by the replication of chromosomes • Meiosis takes place in two sets of cell divisions, called meiosis I and meiosis II • The two cell divisions result in four daughter cells, rather than ...
Conservation Genetics of Wolves and their Relationship with Dogs
Conservation Genetics of Wolves and their Relationship with Dogs

... ameliorate inbreeding depression, although it unlikely to eliminate it (Frankham et al. 2002). Genetic adaptation to captivity. Captive breeding can be the only alternative for protecting species that can not survive in their natural habitat. Captive breeding programs aim at retaining high levels of ...
Punnet squares lecture
Punnet squares lecture

... “During the formation of gametes (eggs or sperm), the two alleles responsible for a trait separate from each other. Alleles for a trait are then "recombined" at fertilization, producing the genotype for the traits of the offspring. “ (more about this on Monday) ...
Meiosis
Meiosis

... Inheritance of Genes • Genes are the units of heredity, and are made up of segments of DNA • Genes are passed to the next generation via reproductive cells called gametes (sperm and eggs) • Each gene has a specific location called a locus on a certain chromosome • Most DNA is packaged into chromoso ...
CHAPTER 15
CHAPTER 15

... The results of Morgan’s testcross for body color and wing shape did not conform to either independent assortment or complete linkage. o Under independent assortment, the testcross should produce a 1:1:1:1 phenotypic ratio. o Under complete linkage, we should expect to see a 1:1:0:0 ratio, with only ...
The Chromosomal Basis of Inheritance
The Chromosomal Basis of Inheritance

... The results of Morgan’s testcross for body color and wing shape did not conform to either independent assortment or complete linkage. o Under independent assortment, the testcross should produce a 1:1:1:1 phenotypic ratio. o Under complete linkage, we should expect to see a 1:1:0:0 ratio, with only ...
Biol 1406 notes Ch 15 8thed
Biol 1406 notes Ch 15 8thed

...  Morgan reasoned that body color and wing shape are usually inherited together because the genes for these characters are on the same chromosome.  The other two phenotypes (gray-vestigial and black-normal) were rarer than expected based on independent assortment (but totally unexpected from depend ...
Chapter 11 Complex Inheritance and Human Heredity
Chapter 11 Complex Inheritance and Human Heredity

... traits, genealogists can determine what genes an individual is most likely to have. Phenotypes of entire families are analyzed in order to determine family geno–types, as symbolized in Figure 11.3. Pedigrees help genetic counselors determine whether inheritance patterns are dominant or recessive. On ...
Chapter 13 PPT
Chapter 13 PPT

... Inheritance of Genes • Genes are the units of heredity, and are made up of segments of DNA • Genes are passed to the next generation via reproductive cells called gametes (sperm and eggs) • Each gene has a specific location called a locus on a certain chromosome • Most DNA is packaged into chromoso ...
Document
Document

... always follow Mendel’s law of independent assortment Copyright © 2005 Pearson Education, Inc. publishing as Benjamin Cummings ...
Genetic Problems
Genetic Problems

... were 23 green fruits and 24 striped fruits. ( hint: 23:24 is almost 1:1) What were the genotypes of the two parent watermelon plants? 7. In pea plants, tall [T] is dominant over short [t]. If the offspring of a particular cross were 3,066 tall plants and 998 short plants, what were the genotypes of ...
Chapter 11 - Genetics & Meiosis Review Questions  (w/...
Chapter 11 - Genetics & Meiosis Review Questions (w/...

... 34. A pea plant heterozygous for height and seed color (TtYy) is crossed with a pea plant heterozygous for height but homozygous recessive for seed color (Ttyy). If 80 offspring are produced, how many are expected to be tall and have yellow seeds? 35. What might happen if the gametes of a species ha ...
Lapbook_Genetics - Galena Park ISD Moodle
Lapbook_Genetics - Galena Park ISD Moodle

... A man and his wife both have normal color vision, but a daughter has redgreen color blindness (XrXr), a sex-linked recessive trait. The man sues his wife for divorce on grounds of infidelity. Can genetics prove evidence supporting his ...
Mendel and Genetics
Mendel and Genetics

... and even your height and weight, resemble those of your parents. The passing of traits from parents to offspring is called heredity. Humans have long been interested in heredity. From the beginning of recorded history, we have attempted to alter crop plants and domestic animals to give them traits t ...
11.1 Genetic Variation Within Populations
11.1 Genetic Variation Within Populations

... • Mutation A mutation is a random change in the DNA of a gene. This change can form a new allele. Mutations in reproductive cells can be passed on to offspring. This increases the genetic variation in the gene pool. Because there are many genes in each individual and many individuals in a population ...
SEGREGATION RATIOS–general reference
SEGREGATION RATIOS–general reference

... Polyhaploidy: A plant developed from gamete of species with n>x (e.g., alfalfa, n=2x), still can be called a haploid. ...
HERE - DeRiemaker
HERE - DeRiemaker

... snout. The fossils clearly show that over time, nostrils moved from the snout to the top of the head, as seen in ...
Lesson Plan - Colorado FFA
Lesson Plan - Colorado FFA

... and even your height and weight, resemble those of your parents. The passing of traits from parents to offspring is called heredity. Humans have long been interested in heredity. From the beginning of recorded history, we have attempted to alter crop plants and domestic animals to give them traits t ...
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Hybrid (biology)



In biology a hybrid, also known as cross breed, is the result of mixing, through sexual reproduction, two animals or plants of different breeds, varieties, species or genera. Using genetic terminology, it may be defined as follows. Hybrid generally refers to any offspring resulting from the breeding of two genetically distinct individuals, which usually will result in a high degree of heterozygosity, though hybrid and heterozygous are not, strictly speaking, synonymous. a genetic hybrid carries two different alleles of the same gene a structural hybrid results from the fusion of gametes that have differing structure in at least one chromosome, as a result of structural abnormalities a numerical hybrid results from the fusion of gametes having different haploid numbers of chromosomes a permanent hybrid is a situation where only the heterozygous genotype occurs, because all homozygous combinations are lethal.From a taxonomic perspective, hybrid refers to: Offspring resulting from the interbreeding between two animal species or plant species. See also hybrid speciation. Hybrids between different subspecies within a species (such as between the Bengal tiger and Siberian tiger) are known as intra-specific hybrids. Hybrids between different species within the same genus (such as between lions and tigers) are sometimes known as interspecific hybrids or crosses. Hybrids between different genera (such as between sheep and goats) are known as intergeneric hybrids. Extremely rare interfamilial hybrids have been known to occur (such as the guineafowl hybrids). No interordinal (between different orders) animal hybrids are known. The third type of hybrid consists of crosses between populations, breeds or cultivars within a single species. This meaning is often used in plant and animal breeding, where hybrids are commonly produced and selected, because they have desirable characteristics not found or inconsistently present in the parent individuals or populations.↑ ↑ ↑ ↑
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