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Heredity

Chapter 11

QuestionAnswer
passing of traits from parents to offspring heredity
an inherited characteristic of an organism trait
one of the different forms of a trait allele
a rod or X-shaped structure made of DNA chromosome
a section of DNA that contains the information for one trait gene
study of heredity genetics
a gene that determines a phenotype in combination with another gene, it can mask other forms dominant
a gene that is only expressed if there are no other (dominant) genes present, otherwise they are hidden or masked recessive
having two identical alleles for a trait (they are the same) homozygous
having one dominant and one recessive allele for a trait (they are different) heterozygous
combinations of genes for a trait genotype
way the genes are expressed; the way the organism appears for a trait phenotype
a sex cell (involved in sexual reproduction) gamete
the male gamete sperm
the female gamete egg
a normal body cell, not a gamete somatic cell
the union (joining) of a male gamete and a female gamete fertilization
the cell resulting from fertilization zygote
what is the process of cell division that makes sex cells meiosis
What scientist discovered/ defined the traditional form of inheritance (complete dominance)? Gregor Mendel
How was the pattern of complete dominance discovered? GM cross-pollinated purebred purple with purebred white flowered plants and got ONLY purple, then he crossed those and got 3/4 purple to 1/4 white (did this with 7 pea plant traits)
Why does only ONE of the parent's genes passed on? For each gene, an offspring gets one from the mom and one from the dad
what is a cell called that has a double set of chromosomes, in pairs? diploid
what is a cell called that has a single (half) set of chromosomes, not in pairs? haploid
Created by: doakes27
 

 



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