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biology genetic

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Question
Answer
genes   specific units on a chromosome that carry individual traits  
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phenotype   the physical appearance of an organism  
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dominant   the form of a gene that is expressed while preventing the expression of another gene  
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homozygous   term used when the two genes for a specific trait are identical  
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deoxyribonucleic acid   chromosomes are made of this material (2 words)  
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selective breeding   crossing of plants and animals to produce specific traits in the offspring (2 words)  
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zygote   for a particular trait, this organism has 2 different alleles  
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Punnett square   a chart that can be used in determining the possible combinations of genes among offspring of a genetic cross (2 words)  
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gene pool   all the genes of a given population (2 words)  
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Gregor Mendel   he laid down the basic foundation for the science of genetics 92 words)  
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heterozygous   term used when the 2 genes for a specific trait are not identical  
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forty six   number of chromosomes in a human body cell  
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mutation   a change in a gene  
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recessive   gene that is not expressed due to the influence of a dominant gene  
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genotype   the genetic makeup of an organism  
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polygenic?????   type of inheritance in which traits are controlled by several pairs of genes  
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alleles ????   different forms of a gene for a specific trait such as height  
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?????????   an organism whose alleles for traits are identical  
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Created by: mamarobn