| A | B |
|---|
| The father of genetics | Gregor mendel |
| An alternate version of a trait | allele |
| The allele that is designated by a capital letter | dominant allele |
| The allele that is "hidden" when in the presence of a dominant allele | recessive allele |
| Mendel studied seven traits of this organism | pea plant |
| The allelic makeup of an individual, designated by letters | genotype |
| The physical expression of a trait | phenotype |
| The term used to describe the genotype "RR" | homozygous dominant |
| The term used to describe the genotype "Pp" | heterozygous |
| The term used to describe the genotype "tt" | homozygous recessive |
| What percentage of offspring will be purple when two true breeding plants are crossed, one purple and one white. | 100% of the offspring will be purple |
| What is the genotypic ratio, under normal mendelian genetics, when two heterozygous tall plants are crossed? | 1:2:1 |
| What is the phenotypic ratio, under normal mendelian genetics, when one homozygous dominant red flower, and one heterozygous red flower are crossed? | 4:0 |
| Under what alternative condition will the crossing of red and white flowers result in pink offspring? | incomplete dominance |
| Two pink flowers (incomplete dominance) are crossed, what are the genotypic and phenotypic ratios for the offspring? | genotypic: 1:2:1; phenotypic: 1:2:1 |
| Under what alternative condition will spotted offspring be the result? | codominance |
| Blood type is an example of what alternative mode of inheritance? | multiple alleles |
| How many alleles determine blood type? | 3 alleles |
| What percentage of offspring will have type O blood if two type AB individuals mate? | none |
| Give three examples of polygenic, multifactorial traits. | height, intelligence, fingerprints, skin pigmentation |
| When multifactorial traits are graphed, what type of curve results? | bell-shaped, or normal curve |
| In polygenic traits, what are the two allele types? | active and inactive |
| Which type of allele determines the phenotype under polygenic inheritance? | active alleles |
| Of the two genotypes that determine height, AABbCcdd or AabbCCdd, which individual will be taller? | The individual with the genotype AABbCcdd |
| Which "environment" is responsible for participating in fingerprint patterning? | The mother's womb |
| Two parents, AaBbCc and AaBbCc, mate. What is the probability that they will have a child who is AABBCC? | 1/64 |
| What are the three main types of fingerprint patterns? | arch, loop, and whorl |
| Do twins have identical fingerprints? Why? | No, because it is a multifactorial trait. |
| Finish the statement: All multifactorial traits are polygenic... | But not all polygenic traits are multifactorial |
| Extra credit: Assuming height is determined by 4 genes, how can two "average" sized individuals have an extremely tall offspring? Offer possible genotypes. Email Miss Boester with the answer - the deadline for earning extra credit is Monday, April 10th | Extra credit |
