Allele example sentences

"Allele" Example Sentences

1. An allele is one of two or more variant forms of a gene that originate by mutation and are found at the same place on a chromosome.
2. Dominant alleles produce an effect in the phenotype, even if there is only one copy of the allele.
3. Recessive alleles require two copies of the allele to produce an effect in the phenotype.
4. The square jaw trait is dominant over the narrow jaw trait, so an individual only needs one copy of the square jaw allele to have a square jaw phenotype.
5. Sickle cell anemia is caused by a recessive allele.
6. Blue eyes are associated with recessive alleles.
7. Heterozygous individuals have two different alleles for a gene, such as one dominant and one recessive allele.
8. Homozygous individuals have two of the same alleles for a gene.
9. Alleles for certain traits favor an individual's survival by conferring benefits to the carrier.
10. The presence of multiple alleles for a trait allows for genetic variation within a population.
11. Certain alleles may predispose one to diseases but provide benefits in other ways.
12. Mutations can create new alleles that may proliferate in the population.
13. The Lactose tolerance allele allows individuals to digest milk into adulthood.
14. The sickle cell allele confers disease but also resistance to malaria.
15. Geneticists study alleles to understand genotype-phenotype relationships.
16. The allele for brown eyes is dominant over blue eyes.
17. The sickle cell allele led to sickle cell anemia in Harriet's genotype.
18. Rust resistance in wheat depends on specific alleles.
19. Bob carried the recessive AB allele for blood type.
20. During meiosis, alleles segregate into gametes randomly.
21. The defective BRCA2 allele predisposes for breast cancer.
22. The allele for dimples is described as dominant over the allele for no dimples.
23. The alleles for blood type A and B are codominant.
24. Gregor Mendel studied allele inheritance by breeding pea plants.
25. Gregor Mendel used the terms dominant and recessive to describe allele interactions.
26. Researchers determined that a specific dopamine receptor allele increases risk for schizophrenia.
27. Karen studied allele frequency changes over generations in the fruit fly population.
28. The allele for hemophilia is X-linked and recessive.
29. Flower color in roses depends on specific alleles at certain loci.
30. Twin studies help researchers determine the role of alleles versus environment.
31. The alleles resulting from meiosis form the genetic variation within a population.
32. Alleles at multiple loci interact to influence complex traits.
33. Yan's research focuses on finding alleles associated with autism.
34. Biotechnology allows researchers to manipulate genes and alleles.
35. Favism results from a recessive allele that affects an enzyme in the metabolic pathway.
36. Different alleles of a gene exist because of mutations that arise over time.
37. Allele frequency measures the proportion of a particular allele at a locus in a gene pool.
38. Alleles associated with disease are often under selection pressure against them.
39. Certain alleles confer antibiotic resistance in bacteria.
40. The allele for polydactyly causes more than five digits to develop.
41. Researchers identified an allele linked to increased longevity.
42. Dominant alleles exhibit heterosis or hybrid vigor in offspring.
43. Alleles determine traits at the level of DNA and genes.
44. Scientists hope to identify more disease-causing alleles to diagnose and treat illnesses.
45. Forensic scientists use alleles in DNA profiling to identify individuals.
46. Family studies help identify disease-causing alleles.
47. Genome-wide association studies screen for alleles associated with common diseases and traits.
48. New alleles arise due to mutations and genetic recombination during meiosis.
49. The allele for blue eyes is recessive to the allele for brown eyes.
50. Scientists often study alleles in model organisms like fruit flies and mice.
51. Deleterious alleles cause disease and decrease fitness.
52. Brown fur in mice is dominant to albino fur.
53. Codominance occurs when both alleles for a gene are fully expressed.
54. Genes code for proteins based on specific allele sequences.
55. The allele for cystic fibrosis causes a fatal disease.
56. Scientists use linkage analysis to map specific alleles to their locations on chromosomes.
57. Over time, favorable alleles increase in frequency through natural selection.
58. Certain genetic disorders only appear when a specific allele is inherited from both parents.
59. Genetic testing can reveal an individual's collection of alleles.
60. Population studies examine how alleles change over generations.

Common Phases

1. This particular allele is associated with an increased risk of certain cancers.
2. The mutant allele caused the disease in this family.
3. The SNP results showed that she had one copy of the risk allele.
4. The allele frequency of that genetic variant is 0.3 in the general population.
5. There was linkage between the trait and a particular marker allele on chromosome 3.
6. The F158Y allele confers increased resistance to the herbicide.
7. She is homozygous for the normal allele at that locus.
8. The disease allele has a high penetrance in this population.
9. Researchers identified two novel alleles associated with the disorder.
10. The APOE ε4 allele is a genetic risk factor for Alzheimer's disease.
11. Heterozygotes who carry one copy of the mutant allele may be unaffected carriers.
12. The A allele is dominant over the a allele at this locus.
13. They sequenced the entire exon to identify all existing alleles.
14. His genotype at that locus is homozygous for the ancestral allele.
15. Homozygosity for the mutant allele causes Tay-Sachs disease.
16. They compared allele frequencies between the case and control groups.
17. The MTHFR C677T allele is associated with increased risk of certain birth defects.
18. The 156Met allele has a protective effect against malaria.
19. Most individuals in this population carry two copies of the normal allele.
20. Researchers tracked how the allele spread through successive generations.
21. The allele frequency of that variant shows significant population stratification.
22. Heterozygotes have a selective advantage over those homozygous for either allele.
23. A rare allele can cause a Mendelian disorder when it is homozygous.
24. Linkage disequilibrium between alleles on the same chromosome was observed.
25. Her genotype indicates that she is heterozygous for the mutant allele.
26. Allele swapping experiments were used to pinpoint the causal genetic variant.
27. Haplotype mapping identified several chromosomal regions linked to the trait.
28. They are interested in how patterns of allele frequency change over time.
29. The polymorphism created a new allele that confers antibiotic resistance.
30. The mutant allele exhibits codominant inheritance in this disorder.
31. This allele matches the one found in a high percentage of ovarian cancer patients.
32. A benign allele is extremely common in some ethnic groups.
33. The CCR5-Δ32 allele confers resistance against HIV infection.
34. Genetic drift likely caused the decrease in frequency of that allele.
35. The mutant allele is recessive and results in the disease phenotype.
36. Only certain combinations of alleles result in the phenotype.
37. Gene flow could have spread that allele into this population.
38. The mutant allele introduces a premature stop codon into the gene.
39. He is homozygous for the protective allele against malaria.
40. Synteny with other species revealed a deletion allele in this disorder.
41. The mutant allele renders the protein non-functional.
42. They found no association between the allele and the trait in that study.
43. The allele frequency of that variant differs greatly between populations.
44. The mutation creates a new restriction site that distinguishes the two alleles.
45. The polymorphism results in two alleles that encode different amino acids.
46. Antigenic variation involves rapidly switching between different alleles.
47. Scientists have identified over 20 alleles associated with that genetic disorder.
48. There seems to be increased recombination around that particular allele.
49. The mutated allele causes expression of a truncated protein.
50. They wanted to see if there are multiple alleles contributing to the phenotype.
51. The allele frequencies differ between the case and control groups.
52. That variant is in nearly complete linkage disequilibrium with the risk allele.
53. Cis-regulatory mutations generate new alleles that alter gene expression.
54. The rare allele is associated with significantly increased risk of disease.
55. Selection favored individuals who were heterozygous for the two alleles.
56. This breed has two different alleles that determine coat color.
57. Population bottlenecks likely reduced the number of alleles at that locus.
58. The mutant allele disrupts a critical binding site in the protein.
59. The haplotype carries multiple alleles that contribute to increased risk.
60. That allele was completely absent from the local population.