問題一覧
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states that during the production of gametes, two copies of each hereditary factor segregate so that offspring acquire one factor from each parent. In other words, allele (alternative form of the gene) pairs segregate during the formation of gamete and re-uniterandomly duringfertilization
Law of Segregation
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allows the flow of the genetic material from generation to generation, involves two processes: gametogenesis and fertilization
Animal reproduction
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a place at which a particular gene resides on the genetic or linkage map.
Locus
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taken from the Greek word which means "to stand upon". Interaction of between two or more genes so that one of them interferes with or even inhibits the phenotypic expression of the other gene
Epistasis
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an offspring of a cross between two genetically unlike individuals.
Hybrid
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scientific name of sheep
Ovis aries
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The corresponding trait determined by an allele which is manifested in the heterozygote form..
Dominance
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IT IS ONE WHERE ANIMALS ARE MOVED TO AREAS WHOSE FIELDS HAVE FOOD, DEPENDING ON THE SEASON OF THE YEAR
TRANSMANHUNT LIVESTOCK FARMING
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HE CONDUCTED TWO EXPERIMENTS TO HIS LAWS MAIN CONCLUDE OF INHERITANCE
1865
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THE ANIMALS IN THIS KIND OF FARMING IS STORED WITH ADEQUATE TEMPERATURE, FEED AND HEALTH CARE NECESSARY FOR THE PRODUCTION OF ANIMALS TO BE HEALTHY AND FASTER.
INTENSIVE LVESTOCK FARMING
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occurs when some individuals do not have the same chances of mating with individuals of the opposite sex.
Non-random mating
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One of two or more alternative forms of a gene which are usually recognizable by the phenotype
Allele
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the process of differentiation of a mature egg cell from an undifferentiatedgerm line cell, including meiosis; female produces eggs
Oogenesis
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CHARACTERIZED BY THE GRAZING OF ANIMALS LIKE CATTLE ON A LARGE EXPANSE OF LAND SO THAT THEY HAVE A NATURAL DIET.
NOMADIC LIVESTOCKFARMNG
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the process of producing the reproductive cells
Gametogenesis
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a spontaneous change in the biochemical structure of the gene resulting in an entirely different phenotypic effect.
Mutation
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MENDEL PUBLISHED OF HIS HYBRIDIZATION STUDIES OF PEA PLANTS
1865
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determine the sex of the individual.
Sex chromosomes
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reduction in fitness or vigor because of inbreeding or normally cross-pollinate organisms.
Inbreeding depression
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happens if individuals that crosses each other has only one different trait from each other
monohybrid cross
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is an art and science of the genetic improvement of farm animals
Animal Breeding
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scientific name of rabbit
Oryctolagus coniculus
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scientific name of pig
Sus crofa domesticus
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individuals that are related by descent tend to mate more often than under random mating; also tend to drive the population towards the increase in the frequency of homozygotes
Inbreeding
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A human being averages on how many genes?
20000-25000
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Is a branch of biology concerned with the study of genes, genetic variation and heredity in organisms.
GENETICS
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the observable manifestation of a given character of an individual;
Phenotype
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Sex dimorphism in mammals
Complete disassortative mating
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This is also called Mendel's first law of inheritance. According to the law of dominance, hybrid offspring will only inherit the dominant trait in the phenotype.
Law of Dominance
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A form of non-random mating or a special case of assortative mating where individuals that ate related by ancestry are mated together.
Inbreeding
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process in which certain genotypes contribute more progeny in the next generation than other genotypes.
Selection
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process in which individuals from one population transfer to another population.
Migration
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male gametes of animals
Spermatozoa
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refers to the specific combination of genes that are associated with a particular characteristic of the individual;
Genotype
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control or regulate the function of other genes; may function in terms of quantity, quality or timing of the activity of certain structural genes
Regulatory genes
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Is the mating of two animals of different breeds.
Crossbreeding
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The inheritance of certain characteristics that are associated with one sex or the other because the genes controlling them are located in the sex chromosomes.
Sex-linkage
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scientific name of bee
Apis mellifera
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Process in which some individuals are chosen over others parents of the next generation.
Selection
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the female gamete
Ovum
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Mating animals that are more distantly related which can be traced back to one common ancestor.
Line Breeding
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(P)
phenotype
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individuals which are less phenotypically similar tend to mate more other together than would be expected by chance; tend to maintain the production of more heterozygotes at the expense of homozygotes.
Disassortative matings
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carry genetic material but do not determine sex.
Autosomes
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IS ONE THAT IS CARRIED OUT ON LARGE AREASOF LANDSSUCH AS MEADOWS, PASTURES ORMOUNTAINSSO THAT ANIMALSGRAZE AND TAKE ADVANTAGE OF THE NATURAL RESOURCES OF VARIOUS AREAS
EXTENSVE LVESTOCK FARMING
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individuals that are more phenotypically similar tend to mate often; tend to drive the population toward homozygosis
Assortative
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a pair of allelic genes contribute independently to the genotypic value; Ex. Inheritance of the roan coat color cattle.
Additive
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scientific name of goat
Capra hircus
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This is also called Mendel's first law of inheritance
Law of dominance
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the process of cell, including meiosis; male produces sperm cells.
Spermatogenesis
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directly responsible for the synthesis of certain biochemical products during cell metabolism.
Structural genes
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People started to understand the science of inheritance
19th century
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(G)
genotype
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Gene may be active only when they occur in pairs of alleles during the diploid phase
Gene Action
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a measure of the tendency of some genes to be inherited as a group rather than individually because of the proximity of their loci in the chromosome.
Linkage
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genes that are located in the sex chromosomes.
Sex-linked genes
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collection of genes is called
Genome
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the totality of non-genetic factors affecting the individual
Environment
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The DNA is a
double helix
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Also known as Mendel's second law of inheritance, the law of independent assortment states that a pair of traits segregates independently of another pair during gamete formation
Law of Independent Assortment
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Scientific name of cow
Bos taurus
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is a cross between two individuals that differ in two observed traits
di hybrid cross
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The mating of males and females of the same breed or type
Pure Breeding
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the fusion of two gametes of opposite sexes to form a zygote or an embryo.
Fertilization
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Discovered the fundamental laws of inheritance
Gregor Johann Mendel
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STRUCTURE CALLED CHROMOSOMES CARRY THIS INFORMATION IN THE FORM OF A
DNA
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scientific name of chicken
Gallus gallus domesticus
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mature reproductive cell capable of fusing with a similar cell of the opposite sex to form a zygote, also called sex cell.
Gamete
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IT IS ONE IN WHICH THE ANIMALS ARE HOUSED AND FED BUT ARE ALLOWED TO GRAZE OR MOVEAROUND THE FARM TO SCAVENGE WITHIN AN ENCLOSED AREA WITHIN THE FARM AREA
SEMI INTENSIVE FARMNG
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Every Genetic Information of an organismis contained or stored in every cell's
nucleus
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the roles that influence the expression of traits as
genes
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(E)
environment