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Genetics
| Question | Answer |
|---|---|
| A trait that is not passed down from parents to their offspring . | acquired trait |
| Dyed hair, pierced ears, broken bones, and scars are examples of a(n)__________. | acquired trait |
| reproduction in which one parent produces offspring without fertilization of an egg cell | asexual reproduction |
| offspring have the same genetic makeup as the parent | asexual reproduction |
| traits that are both seen when they are present | codominant trait |
| a chicken with black and white feathers is an example | codominant trait |
| a trait that is always visible in offspring whenever it is present; blocks the other genetic trait | dominant trait |
| when dominant and recessive traits are present, this is the only trait visible | dominant trait |
| a new living thing produced by one or two parents | offspring |
| a trait that is not seen when the dominant trait is also present; it is the trait blocked or masked | recessive trait |
| reproduction when two gametes are present; the sperm and egg cells | sexual reproduction |
| a cell with half the chromosomes of a diploid cell | haploid cell |
| sex cells; sperm and egg cells | gametes |
| a characteristic of an organism | trait |
| skin color, eye color, hair, allergies, face shape, and many others | inherited traits |
| one of two or more forms that a gene could take | allele |
| describes an allele that is always expressed when it is present | dominant trait |
| a pattern of inheritance in which the phenotypes of both alleles inherited are clearly expressed | codominance |
| the genetic make of an organism | genotype |
| having two alleles that are different | heterozygous |
| Rr | heterozygous dominant |
| rr | homozygous recessive |
| RR | homozygous dominant |
| having two alleles that are the same | homozygous |
| the physical appearance of an organism | phenotype |
| the likelihood that a specific event will occur | probability |
| a diagram that shows the possible genotype of offspring two parents | Punnett square |
| decribes an allele that is not expressed when the dominant allele is present | recessive trait |
| when an experiment is concluded | trial |
| uppercase letters represent this allele | dominant |
| lowercase letters represent this allele | recessive |
| During a first generation cross the offspring will be _______________. | hybrids |
| Heterozygous is also called _________________. | hybrid |
| Homozygous dominant and homozygous recessive also known as | purebreeds |
| During a second generation cross | hybrid cross |
| The phenotype result of a second generation cross | 3 to 1 75% chance of dominate offspring |
| The genotype result of a second generation | 1 to 2 to 1 Homozygous dominant: heterozygous: homozygous recessive DD -Dd- dd |
| An example of sex linked trait | colorblindess |
| an example of incomplete dominance | red and white flower make pink offspring |
| an example of dominant trait | black mouse fur hides the white fur |
| example of recessive trait | white fur is hidden by black fur |
| A genetic disorder is shown | two recessive traits are present |
Created by:
Christie Williams
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