6.4 Traits, Genes, and Alleles
KEY CONCEPT
Genes encode proteins that produce a diverse range
of traits.
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Guidelines and tips
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
Community
Ask the community
Ask the community for help and clear up your study doubts
University Rankings
Discover the best universities in your country according to Docsity users
Free resources
Our save-the-student-ebooks!
Download our free guides on studying techniques, anxiety management strategies, and thesis advice from Docsity tutors
Genetics: Traits, Genes, and Alleles, Exams of Genetics
The concepts of traits, genes, and alleles in genetics. Genes encode proteins that produce various traits, and each gene has a specific locus on homologous chromosomes. Alleles are alternative forms of a gene, and organisms inherit one allele from each parent. Dominant and recessive alleles determine the expression of traits, and homozygous and heterozygous genotypes yield different phenotypes. The text also explains the relationship between genotype and phenotype.
What you will learn
- How do dominant and recessive alleles determine the expression of traits?
- What is the role of genes in producing traits?
- What is an allele, and how does it differ from a gene?
Typology: Exams
2021/2022
1 / 6
This page cannot be seen from the preview
Don't miss anything!
Related documents
Partial preview of the text
Download Genetics: Traits, Genes, and Alleles and more Exams Genetics in PDF only on Docsity!
KEY CONCEPT
Genes encode proteins that produce a diverse range of traits.
The same gene can have many versions.
- A gene is a piece of DNA that directs a cell to make a certain protein.
- Each gene has a locus, a specific position on a pair of homologous chromosomes.
Genes influence the development of traits.
- All of an organism’s genetic material is called the genome.
- A genotype refers to the makeup of a specific set of genes.
- A phenotype is the physical expression of a trait.
- Alleles can be represented using letters.
- A dominant allele is expressed as a phenotype when at least one allele is dominant.
- A recessive allele is expressed as a phenotype only when two copies are present.
- Dominant alleles are represented by uppercase letters; recessive alleles by lowercase letters.