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Chapter 14; Mendel
Question | Answer |
---|---|
Trait | Specific characteristic of an individual |
Hybrid | Created from cross of true-breeding individuals |
1st generation | P parent |
Offspring of 1st generation | F1 offspring |
Genes | Passed from one generation to the next. Determine an individual's characteristic |
Alleles | The different forms of a gene |
Some alleles are dominant, some recessive | Principle of Dominance |
Separation of alleles during gamete formation | Segregation |
Genotype | Genetic makeup |
Phenotype | Physical traits |
Two organisms may share the same ______but have different _____. | Phenotype; genotype |
Homozygous | Two identical alleles for a gene |
Heterozygous | Two different alleles for a gene |
One allele is not completely dominant over another | Incomplete dominance |
The phenotypes for both alleles are clearly expressed | Codominance |
Many genes exist in more than two forms | Multiple allele |
Many traits are produced by the interaction of several genes | Polygenic Traits |
What is another way of saying gamete? | Sex cells |
Zygote | Half of the chromosomes are from the female and the other half is from the male |
What is diploid? | Both sets of homologous chromosomes; 2N |
What is haploid? | Only a single set of chromosomes; 1N |
During what phase of meiosis does crossing over occurs? | Prophase 1 |