Tomahawk 7th Life Structure and Function Ch 5 vocabulary

16 terms by DawnWiseman

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heredity

the passing of traits from parent to offspring

alleles

the different forms of a trait that a gene may have

genetics

the study of how traits are inherited through the interactions of alleles

hybrids

received different genetic information, or different alleles, for a trait from each parent

dominant factors

dominate or cover up a recessive factor

recessive factors

Factors that will be masked or hidden by the dominant factors

Punnett Square

a chart that shows all the possible combinations of alleles that can result from a genetic cross; An uppercase letter stands for dominant and a lowercase letter stands for recessive

genotype

genetic makeup of an organism; based on information from a Punnett Square

phenotype

what an organism LOOKS like based on its genotype

homozygous

an organism with two alleles for a trait that are the same

heterozygous

An organism that has two different alleles for a trait

incomplete dominance

When the offspring of two homozygous parents show an intermediate phenotype; one allele is not completely dominant over the ex: red flower and white flower = pink flower

polygenic inheritance

occurs when a group of gene pairs acts together to
produce a trait; eye color is an example

sex-linked gene

an allele inherited on a sex chromosome; color blindness is a sex-linked disorder

genetic engineering

experimenting with biological and chemical methods to change the arrangement of DNA that makes up a gene

alleles

the different forms of a gene

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