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Ch 6 and 7 Biology

QuestionAnswer
Biology Review Ch 6 and 7
Meiosis produces four chromosomes with half the number of chromosomes as the parent, produces sex cells
Meiosis I separation of homologues
Difference between anaphase (mitosis) and anaphase I chromatids do not separate
Diagram
Crossing over exchange of DNA between homologous chromosomes, results in genetic recombination (variation)
Oogenesis formation of the egg, occurs in female reproductive organs
Gametogenesis formation of gametes
Asexual reproduction one parent, offspring identical to parent, budding, fragmentation, fission
Sexual reproduction alternation of generation, haploid, diploid
Alternation of Generations complex life cycle, diploid cells for haploid spores
Haploid Life Cycle zygote the only diploid cell
Mendel predictable patterns in inheritance, father of genetics
Heterozygous dominant and recessive genes, dominant expressed
Test cross all offspring dominant=homozygous, half dominant=heterozygous, identify unknown genotypes
Probability likelihood an event will happen
Codominance 2 dominant traits both expressed
Genetic counselor help people with a history of genetic disorders, help decide to have children, uses pedigree
Cytokinesis cytoplasm divides unequally
Heredity passing of traits from parent to offspring
P generation cross pollinate
F 2 3:1 ratio, supports law of segregation
Law of segregation alleles separate during gamete formation
Homozygous alleles are the same
Law of independent assortment inheritance of one trait has no effect on other traits
Chromosomes linked meiosis to Mendel
Punnett Squares use
Sex linked
Risk of genetic disorders analyzed by pedigree, genetic counseling, prenatal testing
Multiple alleles example: blood type
Essay crossing over, genotype, phenotype, codominance
Created by: evroman
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