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Bio
Bio Genetics Only
| Question | Answer |
|---|---|
| What are the sex chromosomes for a normal male? | XY |
| In a pedigree how would we show a male that has the trait we are observing? | Filled-in square |
| What is the general term for when you have more than 2 copies of a chromosome? | Trisomy |
| What is a single term to explain incomplete dominance? | Blending |
| What is an example of a multiple allele trait? | ABO blood typing |
| In pedigrees, traits can be sex-linked or ___________. | Autosomal |
| For females to express a recessive sex-linked trait, how many alleles for that trait do they have to receive in order to display that trait? | 2 copies |
| When dealing with a trait that is codominant, explain what a heterozygous individual will display. | They will have ½ of one version and ½ the other version. |
| What is a genotype for heterozygous Type B blood? | Bi |
| Can a female ever get a sex-linked recessive disorder? If no, explain why. If yes, give example of genotype. | yes, XhXh |
| Autosomal means the chromosome pairs numbered 1-? | 1-22 |
| What little letters do we never use with blood typing? | a, b |
| What is the term for when there are several genes that will influence a trait (example: skin color in humans) | Polygenic trait |
| Why can’t males be a carrier for a recessive X-linked disorder? | Because males only get one X chromosome, so they have it or do not. |
| Sex-link traits are mostly on which of the sex chromosomes? | X chromosome |
| What are the sex chromosomes for a normal female? | XX |
| What is the term for when chromatids fail to separate properly? | Nondisjunction |
| What is the term for the picture of an individual’s chromosomes? | Karyotype |
| In Mendel’s experiment, what was the F2 generation phenotype ratio? | 3 purple:1 white |
| What law shows that two different characteristics separate out randomly when making gametes | law of independent assortment |
| In humans the first 22 pairs are called what? | autosomes |
| Cross a homozygous dominant with a homozygous recessive. What are the genotypes? | 4 Gg |
| Term for study of heredity? | genetics |
| In Mendel’s experiment, what was the P generation using flower color? | truebreeds of purple and white |
| Term for when you have two identical alleles for a gene? give an example in letter form. | homozygous – TT or tt |
| Cross a heterozygous with a heterozygous. What are the genotypes? (use G/g) | GG:2Gg:gg |
| Term for a trait that hides another trait? give an example in letter form. | dominant - T |
| Term for passing of traits from parents to offspring? | heredity |
| Term for segment of DNA that codes for a particular protein? | gene |
| Term for a set of alleles? | genotype |
| In Mendel’s experiment, what was the F1 generation phenotype? | all purple |
| If a human has an XX for their sex chromosomes, are they male or female? | female |
| A somatic cell is haploid or diploid? | diploid |
| Term for when you have two different alleles for a gene? give an example in letter form. | heterozygous Tt |
| Term for different versions of a gene (like purple and white flower color) | allele |
| If a human has an XY for their sex chromosomes, are they male or female? | male |
| Term for the physical appearance? | phenotype |
| Term for a trait that is hidden? give an example in letter form. | recessive – t |
| In a pedigree how would we show a male that has the trait we are observing? | Filled-in square |
| In pedigrees, traits can be sex-linked or ___________. | Autosomal |
| For females to express a recessive sex-linked trait, how many alleles for that trait do they have to receive in order to display that trait? | 2 copies |
| When dealing with a trait that is codominant, explain what a heterozygous individual will display. | They will have ½ of one version and ½ the other version. |
| What is a genotype for heterozygous Type B blood? | Bi |
| Can a female ever get a sex-linked recessive disorder? If no, explain why. If yes, give example of genotype. | yes, XhXh |
| Autosomal means the chromosome pairs numbered 1-? | 1-22 |
| What little letters do we never use with blood typing? | a, b |
| What is the term for when there are several genes that will influence a trait (example: skin color in humans) | Polygenic trait |
| Why can’t males be a carrier for a recessive X-linked disorder? | Because males only get one X chromosome, so they have it or do not. |
| Sex-link traits are mostly on which of the sex chromosomes? | X chromosome |
| Give phenotypes with percentage of a cross from an AB blood type against a heterozygous type A. | 50% A, 25% AB, 25% B |
| Give phenotypes with percentages for an incomplete dominant snapdragon. The possible phenotypes are red, pink, white. Cross a pink with a white. | 50% pink, 50% white |
| What law states that alleles separate when creating gametes? | Law of segregation |
| What are the 3 ways to get genetic variation? | crossing over, independent assortment, fertilization |
| Which parent determines the gender of the offspring? | the father |
| What genetic disorder breaks down the central nervous system in infancy. | Tay Sachs |
| What disorder is autosomal dominant and breaks down brain tissue in middle age adults? | Huntington's |
| This disorder has mucus that clogs many organs. | Cystic Fibrosis |
| What disorder has no color in the skin, eyes, and hair. | Albinism |
Created by:
thompsondk
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