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7 Science Ch 11
7 Science Ch 11 review
| Question | Answer |
|---|---|
| a punnet square shows you all the ways what combines? | alleles |
| How many alleles are there for blood type? | 3 |
| Mendal labeled different alleled plants as | hybrid |
| give an example of a recessive genetic disorder | cystic fibrosis |
| What type of allele is a capital letter on a punnet square | dominant |
| give four blood types | a, b, ab, o |
| how do we write a heterozygous genotype | Tt, Ss |
| write a recessive homozygous genotype | tt |
| when an intermediate form is expressed it is called? | incomplete dominance |
| the genetic make-up of an organism is called? | genotype |
| a tool for tracing a trait through a family is: | pedigree |
| when more than alleles control a trait it is called: | multiple alleles |
| the physical appearance of an organism is called? | phenotype |
| what is the chance that something will occur? | probability |
| what are factors that seem to disappear | recessive allele |
| when two alleles are the same we put two labels to it which are: | homozygous, pure bread |
| the study of heredity is | genetics |
| passing traits from parents to offspring is: | heredity |
| describe male and female chromosome differences: | female xx male xy |
| who is the father of genetics? | Gregor Mendel |
| each sex cell has how many alleles for each trait? | 1 |
| why is it more common for males to be color blind than female? | males have y so they can't dominate over an x trait |
| what effect does cystic fibrosis have on the human? | too much mucus |
| selective breeding | pick and breed parent |
| Gene therapy | insert DNA into virus to attack certain cell |
| draw a pedigree | male (square) female (circle) |
| the passing of traits from parent to offspring | heredity |
| genes on chromosomes control the ____ that show up in an organism | traits |
| the different forms of a trait that a gene may have are____? | alleles |
| during _____ a pair of chromosomes separates and the alleles / chromosome move into separate sex cells | meiosis |
| each sex cell now contains how many allele for each trait? | 1 |
| the study of how traits are inherited is called | genetics |
| Mandel was the first to use _______ & ______ to explain heredity and to trace one trait one trait for generation | mathematics & probability |
| Hybrid receives (same or different) genetic information for a trait from each parent. | different |
| Which allele (recessive or dominate) covers up or dominates the other trait? | dominate |
| which allele (recessive or dominate) the trait seems to disappear | recessive |
| Probability helps you predict the chance that something will happen. (true or false) | true |
| a _______ can help you predict what an offspring will look like. | punnet square |
| ______ stand for dominant alleles | upper case letters |
| ______ stand for recessive alleles | lower case letters |
| the genetic make up of an organism is called? | genotype |
| an organism with tow alleles for one trait that are the SAME | homozygous (written TT) |
| an organism with tow alleles for one trait that are DIFFERENT | heterozygous (written Tt) |
| the way an organism looks and behaves as a result of its genotype | phenotype |
| In incomplete dominance, neither allele for a trait is _____ or____ | dominate or recessive |
| In incomplete dominance, the phenotype produced is ____ between the two homozygous parents. | intermediate |
| In Multiple Alleles, more than ___ alleles that control a trait are called multiple alleles. | 2 (3 or more) |
| In Multiple Alleles, traits controlled by multiple alleles produce more than three _____ | phenotype |
| In polygenic inheritance, a group of gene pairs acts together to ____, which creates more variety in phenotypes | produce a trait |
| In polygenic inheritance, many human traits are controlled by ______, such as hair and eye color | multiple genes |
| genes that are altered or copied incorrectly are called? | mutations |
| a mutation can be harmful, beneficial or ____ | neutral |
| chromosome disorders are caused by ____ or ___ chromosomes than normal | more or less |
| what is caused by an extra chromosome 21 | down syndrome |
| In recessive genetic disorders, both parents have a _____ allele responsible for the disorder and pass it to their child | recessive |
| Because parents are _____, they don't show symptoms | heterozygous |
| _____ is a homozygous recessive disorder | cystic fibrosis |
| chromosomes that determine the sex of an organism are XX in ____ and XY in ____ | female, male |
| Females produce eggs with which chromosomes only. | X |
| Males produce sperm with which chromosomes only | Y |
| In Sex-linked disorders, an allele inherited on an X or Y chromosome is which kind of gene? | sex-linked |
| ______ is a sex-linked disorder caused by a recessive allele on the X chromosome. | color blindness |
| a _____ follows a trait through generations of a family | pedigree |
| changing the arrangement of DNA that makes up a gene | genetic engineering |
| Name two types of genetic engineering | recombinant DNA & gene transfer therapy |
| Insertion of a useful segment of DNA into a _____. (used in recombinant DNA) | bacterial |
| ____ is made by genetically engineered organisms | insulin |
| In gene transfer therapy, a normal allele is placed into a ____, which delivers the normal allele when it infects its target cell | virus |
| gene transfer therapy may be used to control ____ or other genetic disorders. | cancer |
| created by inserting the genes that produce desired traits in one plant into a different plant | genetically engineered plants |
Created by:
pkabbes