![]() When the sperm and egg combine during fertilization, the total chromosome number is restored. On the other hand, human sperm and egg cells have only 23 chromosomes, or half the chromosomes of a diploid cell. Because each chromosome has a pair, these cells are called "diploid" cells. This includes two sex chromosomes: two X chromosomes for females and one X and one Y chromosome for males. YouTube.Cells in the human body have 23 pairs of chromosomes, or 46 in total. Meiosis, by Beverly Biology (2014) on YouTube, which compares and contrasts mitosis and meiosis.īeverly Biology. Take a look at the following video, Mitosis vs. How many chromosomes do human body cells and human sex cells have after they go through each process? Needed to create sex cells required for sexual reproduction to create a new organism, and for variation within a population Needed to repair damaged body, create new body cells, for growth, and to replace cells that have died ½ chromosomes as parent individual chromosomes Identical to parent Individual chromosomes What happens to the number of chromosomes at the end of each process? Are they in pairs or individual chromosomes? How many times does the parent cell divide? No, they are different since they have half the number of chromosomes as the original Interphase, Prophase I, Metaphase I, Anaphase I, Telophase I, Prophase II, Metaphase II, Anaphase II, Telophase II ![]() Interphase, Prophase, Metaphase, Anaphase, Telophase Process in cell division during which four new cells are created each with half the original number of chromosomes, which results in the production of sex cells ![]() Process of cell division that forms two new cells (daughter cells), each of which has the same number of chromosomes Sex cells only Female egg cells or Male sperm cells Table 3.6.1 Differences between Mitosis and Meiosis in Humans (Diploid #46) Cell ProcessesĪll the cells in your body except sex cells Knowing the differences between these fundamental cell processes is an important foundation in your understanding of genetics for the rest of the course. Here, we outline the differences between mitosis and meiosis in humans (Diploid #46). ![]() Complete Linkageĩ.6 Experimental Determination of Recombination FrequencyĬhapter 10 - Sex Chromosomes & Sex Linkageġ0.3 Pseudo-Autosomal Regions on the X and Y Chromosomesġ0.4 Sex Linkage: An Exception to Mendel's First LawĬhapter 11 - Recombination Mapping of Gene LociĬhapter 12 - Physical Mapping of Chromosomes and GenomesĬhapter 13 - Genes and COVID-19 Susceptibility in Humansġ3.3 Genes Implicated in Severe COVID-19 Infection in Humansġ3.4 Approaches for Vaccine Development Against SARS‐Cov‐2Īppendix A: Key Milestones in Genetics and Molecular Biology Timeline Inheriting Parental and Recombinant Gametesĩ.4 Coupling and Repulsion (cis and trans) Configurationĩ.5 Unlinked Genes vs.Inter- and Intrachromosomal Recombination.Deviations from the 9:3:3:1 Phenotypic RatioĢ.6 Predicting Ratios in Genetic Crosses - Rules of Probabilityģ.4 Amount of DNA (c-value) and Number of Chromosomes (n-value)ģ.5 Appearance of a Typical Nuclear Chromosome During the Cell Cycleģ.6 Compare and Contrast Mitosis and MeiosisĤ.5 Calculating Probabilities Using Pedigree Chartsĥ.3 Complementation Groups = Groups of Allelic MutationsĦ.3 Alleles: Hetero-, Homo-, HemizygosityĬhapter 7 - The Central Dogma - Mutations and Biochemical Pathwaysħ.3 The "One Gene: One Enzyme" Hypothesisħ.4 Genetic Screening and Biochemical Pathwaysħ.5 Mutations Without Detectable PhenotypesĨ.3 Epistasis and Other Gene InteractionsĨ.6 Factors Causing Deviation from Mendelian Phenotypic RatiosĬhapter 9 - Linkage and Recombination Frequencyĩ.2 Review of Genetic Nomenclature and Symbolsĩ.3 Recombination and Recombination Frequency.Chapter 1 - Mendel’s First Law and Meiosisġ.4 One Locus on a Chromosome - Segregation - MonohybridĬhapter 2 - Mendel’s Second Law: Independent AssortmentĢ.4 A Dihybrid Cross Showing Mendel's Second Law (Independent Assortment)
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