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Bio unit III
biology test 3
| Question | Answer |
|---|---|
| what is Genotype? | The genetic make-up. Ex. Rr RR rr |
| Whats is phenotype? | we distinguish an organisms appearance or observe genetic make-up. Ex: Blue or Green |
| what is Dominant? | is that allele that will block the other and determine the organisms appearance. |
| What is recessice? | the recessive gene is blocked by the dominate allele so does not impact the appearence but the gene is carried. |
| What is a Locus? | the specific place where the allele is located |
| What is Diploid | |
| What is Homozygous | An Organism that has a pair of identical alleles for a charater. Ex: RR or rr |
| What is allele | an allele is a gene on the chromosome there are variations for each trait. |
| what is Heterozygous? | an organism that has two different alleles for a gene Rr |
| what is a test cross | is used to determine that henotype of an unknown organism. |
| Law or segregation? | 1. alternitive versuins of genes in inherited charaters 2. for each character and organism inherits copies of a gene, one from each parent. 3. dominant allele determines the organisms appearence. 4. segregate during gamete formation & end in dif. gamet |
| law of independent assorment? | each paor pf alleles segregate independently of each other pair of alleles during gamete formation. |
| complete dominance | either one of two(either green or yellow) |
| incomplete dominance | a third option (CrCr==red) CrCw=pink CwCw=white |
| codominance | there are two alleles that are dominant for example AB blood typ is dominint for A and B |
| pleiotropy | multiple phenotypic effects. color of the flower determins the color of the coat of the seed |
| law of segregation in chromosoms and independent assortment | happens in metaphase 1 and anaphase 1. state that the alleles assort independently then segregate |
| nondisjuncion | Meiosis 1 ruins all the cells and in meiosis II only half are ruined. |
| genetic imprinting | variation in phenotupe depends on whether an allele is inherited from the male or female partner |
| monosomic | missing one chromosome expressed by 2n-1 |
| trisomic | means is has an extra chromosome the cell is aneuploidy 2n+1 |
| aneuploidy | a condition of having an abnormal number of chromosomes because an abnormal sperm or egg joined with a normal one |
| polyploidy | having more than chromosomes triploidy 3n tetraploidy 4n |
| syndrome | 1.A group of symptoms that consistently occur together or a condition characterized by a set of associated symptoms. |
| barr body | is the inactive X chromosome in a female somatic cell, rendered inactive in a process called lyonization, ... |
| Crick and watson | who determined the structure and replication mechinism of DNA |
| transcription | synthesizes RNA from the information of DNA happens in the nucleus |
| Translation | is the synthesis of a polypeptide using the information from the mRNA in Rybosomes |
| mRNA | messenger RNA it carries genetic message from the DNA |
| tRNA | trandsfer RNA they attatch to the mRNA to code polypeptides |
| RNA | |
| genetic imprinting | variation in phenotupe depends on whether an allele is inherited from the male or female partner |
| monosomic | missing one chromosome expressed by 2n-1 |
| trisomic | means is has an extra chromosome the cell is aneuploidy 2n+1 |
| genetic imprinting | variation in phenotupe depends on whether an allele is inherited from the male or female partner |
| monosomic | missing one chromosome expressed by 2n-1 |
| trisomic | means is has an extra chromosome the cell is aneuploidy 2n+1 |
| aneuploidy | a condition of having an abnormal number of chromosomes because an abnormal sperm or egg joined with a normal one |
| polyploidy | having more than chromosomes triploidy 3n tetraploidy 4n |
| syndrome | 1.A group of symptoms that consistently occur together or a condition characterized by a set of associated symptoms. |
| barr body | is the inactive X chromosome in a female somatic cell, rendered inactive in a process called lyonization, ... |
| Crick and watson | who determined the structure and replication mechinism of DNA |
| transcription | synthesizes RNA from the information of DNA happens in the nucleus |
| Translation | is the synthesis of a polypeptide using the information from the mRNA in Rybosomes |
| mRNA | messenger RNA it carries genetic message from the DNA |
| tRNA | trandsfer RNA they attatch to the mRNA to code polypeptides |
| RNA | has uricil |
| DNA | has thymine |
Created by:
amontero1
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