Genetics
🇬🇧
In English
In English
Practice Known Questions
Stay up to date with your due questions
Complete 5 questions to enable practice
Exams
Exam: Test your skills
Test your skills in exam mode
Learn New Questions
Manual Mode [BETA]
Select your own question and answer types
Specific modes
Learn with flashcards
Complete the sentence
Listening & SpellingSpelling: Type what you hear
multiple choiceMultiple choice mode
SpeakingAnswer with voice
Speaking & ListeningPractice pronunciation
TypingTyping only mode
Genetics - Leaderboard
Genetics - Details
Levels:
Questions:
56 questions
| 🇬🇧 | 🇬🇧 |
| Hides the expression of the other allele’s trait | Dominant Allele (uppercase letter) - |
| Father of Genetics | Gregor Mendel |
| -an organism’s offspring will look like the parent due to its homozygous purebred genotype | True breeding |
| Alleles separate during the formation of sex cell gametes | Law of Segregation |
| Dominant alleles are not always the most common and not always the most advantageous either… ex | Ex: Huntington’s Disease is a rare, dominant disorder |
| Hidden by the dominant allele’s trait | Recessive Allele (lowercase letter) |
| - predicts the outcome probability of genetic crosses | Punnett Square |
| Two gene punnett square | Dihybrid Cross |
| Genes can separate during the formation of sex cells gametes and do not have to be linked or inherited together | Law of Independent Assortment |
| Genes can separate during the formation of gametes and do always have to be inherited or linked together | False, they do not |
| Ow did Mendel figure out the possible gamete combinations written along the two axes of his dihybrid cross? | He “foiled” each parent’s genotype. |
| 1 TT : 2 Tt : 1 tt | Genotypic Ratio: |
| 3 Tall : 1 Short | Phenotypic Ratio: |
| Axes are ------- genotypes | Parent’s |
| Boxes are ------- genotypes | Offsprings |
| When one allele is not completely dominant over another resulting in a third mixed phenotype | Incomplete Dominance |
| What does oo stand for | Resessive/type o |
| The sex of an individual depends on the presence or absence of a Y chromosome. A male’s sex genotype is XY while a female’s is XX. | Sex Chromosomes |
| Only located on the “X” sex chromosome | X-Linked Traits |
| Since males do have a second back up X they are less susceptible to expressing X-linked traits making these traits more uncommen in men. | False, they are more susceptible |
| Pedigrees | Trace a family’s genotypes and phenotypes and therefore autosomal or X-linked traits |
| Circle | Female |
| Square | Male |
| Shaded | Expresses Trait |
| Half-shaded | Carrier |
| Crossed out | Deceased |
| What is the first step in solving a pedigree | Identify whether the trait is Dominant or Recessive. |
| If there are “affected” children where neither of their parents are also affected, then it’s | Recessive |
| Step two in solving a pedigree is | Identify whether the trait is Autosomal or X-linked. |
| Karyotypes - | Diagrams used to diagnose chromosomal disorders in humans who should normally have no more and no less than 46 chromosomes in 23 pairs |
| Male/Female Karyotypes | The 23rd pair are our Sex Chromosomes. |
| Gel Electrophoresis | - allows scientists to compare & identify an individual’s DNA pattern |
| DNA will separate out into same sized pieces based on an individual’s basic DNA sequence | False, the sizes are different and unique |
| Every finger has the same print | False, they are all different |
| Genetic Engineering | Manipulating the genetic material of living organisms |
| When a strand of DNA transforms because it has acquired and incorporated pieces of foreign DNA | DNA Transformation |
| Recombinant DNA | Combining a DNA plasmid from a bacterium with a gene of interest from a different organism to copy that gene and produce the protein associated with it so it came be inserted into an organism for engineering purposes |