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genetics studies p.1
science class
| Question | Answer |
|---|---|
| what is a phenotype? | the way an organism looks |
| what is a genotype? | genetic makeup or a combination of alleles in an organism |
| what is homozygous? | two of the same alleles for a trait |
| what is heterozygous? | two different alleles for a trait |
| what are genes? | factors that control traits. the different forms of a gene are called alleles |
| what does dominant mean? | an allele that always shows up in an organism, even when the other allele is present |
| what does recessive mean? | an allele that is hidden whenever the dominant is present |
| what is a hybrid? | has two different alleles for a trait |
| what is a trait? | a characteristic such as a seed color |
| what does genetic mean? | the study of heredity |
| what does heredity mean? | the passing of traits from parents to offspring |
| what does purebred mean? | always produces offspring that have the same trait |
| what does alleles mean? | different forms of a gene |
| what does chromosomes mean? | short thick coils of DNA |
| what does DNA mean? | determines the inherited traits of an organism |
| what does acquired trait mean? EX. | environmental, learned, and manipulated |
| what does inherited trait mean? EX. | blood type,hair color, and face shape |
| how many chromosomes are in human cells? | 46 |
| how many chromosomes are in human gametes? | 23 |
| acquired trait- enviromental: | food, soil, and water |
| acquired trait- learned: | learning how to hunt and learning how to follow commands |
| acquired trait- Manipulated: | contolling shapes and sizes of how plants grow |
Created by:
_briannab44_
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