Bosch- Genetics
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| genotype | actual gene combination of an organism
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| phenotype | the physical appearance of an organism
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| genetics | the scientific study of heredity
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| alleles | the different forms of a gene
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| traits | a distinguishing quality that can be passed from one generation to another
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| recessive allele | an allele whose trait is masked in the presence of a dominant allele
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| genes | segments of DNA that carry hereditary instructions and are passed from parent to offspring
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| hybrid | an organism with two different alleles for a trait
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| heredity | the passing of traits from parents to offspring
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| dominant allele | an allele whose trait always shows up in the organism
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| mutation | a change in the order of the bases in an organism's DNA
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| pedigree | a diagram of family history used for tracing a trait through several generations
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| genetic engineering | allows scientists to transfer genes from one organism to another
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| probability | the mathematical chance that an event will occur
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| selective breeding | the breeding of organisms that have a certain desired trait
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| law of independent assortment | each gene pair is inherited independently from the gene pairs for all other traits
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| law of segregation | passing of only one gene for each trait
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| incomplete dominance | when one trait is not completely dominant over another (each allele has its own degree of influence)
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| sex cells | carries half the number of chromosomes found in other body cells
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| offspring | resulting organism
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| self-pollinating plant | has female and male reproductive structure
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| true-breeding plant | all offspring have the same traits as the parent
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| cross pollination | pollen from one plant fertilizes the ovule fo a flower on a different plant
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| homozygous | two dominant or two recessive alleles (genes)- PP or pp
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| heterozygous | one dominant and one recessive allele (Pp)
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| homologous chromosomes | chromosomes that have the same sequence of genes and the same structure (like a pair of shoes)
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| meiosis | copying process that produces cells with half the usual number of chromosomes. Sex cells are made and each receives one-half of each homologous pair
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| human egg cell has ____ chromosomes | 23
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| The union of the egg cell and sperm cell produces ___ chromosomes | 46
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| sex chromosomes | one of the pair of chromosomes that determine the sex of an individual
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Created by:
seagullq
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