Mendelian genetics, Incomplete dominance, Codominance Exam
Practice Questions and Answers (100% Pass)
Gregor Mendel (1822-1884) - ✔️✔️Austrian monk
father of genetics
research re-discovered after his death
pea plants for his research
traits - ✔️✔️distinguishing characteristics that are inherited
genetics - ✔️✔️study of biological inheritance patterns and variation
why pea plants? - ✔️✔️reproduce quickly, large number of offspring, easy to control how they
mate, traits with only two options
Mendel showed - ✔️✔️traits are inherited as discrete units
histones - ✔️✔️proteins; carry positive charges and bind negatively charged DNA in a specific
conformation
Chromosome pairs - ✔️✔️same gene or genes affecting the same traits at corresponding positions
Allele - ✔️✔️same trait, different chromosome of homologous pair
dominant gene (A) - ✔️✔️characteristic expressed in homozygous plant - AA, characteristic
expressed in heterozygous plant - Aa
recessive gene (a) - ✔️✔️characteristic only expressed if both alleles are recessive - aa
Law of segregation - ✔️✔️During gamete formation, the alleles for each gene segregate from each
other so that each gamete carries only one allele for each gene.
Law of independent assortment - ✔️✔️Genes for different traits can segregate independently
during the formation of gametes.
Law of dominance - ✔️✔️Some alleles are dominant while others are recessive; an organism with
at least one dominant allele will display the effect of the dominant allele.
Incomplete Dominance - ✔️✔️occurs when two or more alleles influence the phenotype and form
an intermediate phenotype
1
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller OliviaWest. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for £6.38. You're not tied to anything after your purchase.
