100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
Chapter 20 - Patterns of Genetic Inheritance Part 1 $3.49   Add to cart

Class notes

Chapter 20 - Patterns of Genetic Inheritance Part 1

 9 views  0 purchase
  • Course
  • Institution
  • Book

This file covers the 20th chapter in the textbook Human Biology by Sylvia Mader for the Biology course () in UoS

Preview 0 out of 0  pages

  • June 23, 2023
  • Unknown
  • 2022/2023
  • Class notes
  • Saboor
  • Biology
avatar-seller
Chapter 7 - Patterns of Genetic Inheritance - Part 1


Genotype

Refers to the genes on chromosome that codes for specific trait in an individual. They exist in
specific position (locus) on chromosomes

An allele is an alternate forms of a specific gene at the same locus of chromosome (e.g.,
allele for unattached earlobes and allele for attached earlobes, allele for blue eye and allele
for brown eye)

Alleles occur in pairs, can be either dominant or recessive

Dominant gene (allele): Only one copy of the allele needs to be present in both
chromosomes for the trait to be expressed (Tt or TT)
Recessive allele: Only expressed when both alleles are present (tt)



Homozygous Dominant Genotype: Consists of 2 dominant alleles (TT)

Homozygous Recessive Genotype: Consists of 2 recessive alleles (tt)

Heterozygous Dominant Genotype: Consists of 1 dominant allele and 1 recessive allele
(Tt)

Alleles are designated by one-letter abbreviation




1

, Dominant allele is assigned an uppercase letter (T)
Recessive alleles assigned a lowercase letter (t)



Phenotype

The physical expression (appearance of trait) of the genotype

Genotype Phenotype

EE Unattached earlobe

Ee Unattached earlobe

ee Attached earlobe




2

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

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

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

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 williamboutros. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $3.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

64438 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$3.49
  • (0)
  Add to cart