Biology The Dynamics of Life Chapter 12
11 Questions
100 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is a pedigree?

  • A method of gene therapy
  • A type of genetic disorder
  • A classification of mammals
  • A graphic representation of genetic inheritance (correct)
  • What is a carrier in genetics?

    An individual heterozygous for a specific trait

    What is a fetus?

    A developing mammal from 9 weeks to birth

    What does incomplete dominance refer to?

    <p>Inheritance pattern where the phenotype of a heterozygous is intermediate</p> Signup and view all the answers

    What is a codominant allele?

    <p>Pattern where phenotypes of both homozygote parents are expressed</p> Signup and view all the answers

    What does multiple allele mean?

    <p>Presence of more than 2 alleles for a genetic trait</p> Signup and view all the answers

    What are autosomes?

    <p>Pairs of match homologous chromosomes in somatic cells</p> Signup and view all the answers

    What is a sex chromosome?

    <p>The 23rd pair of chromosomes that determine the sex of an individual</p> Signup and view all the answers

    What is a sex linked trait?

    <p>Traits controlled by genes located on sex chromosomes</p> Signup and view all the answers

    What does polygenic inheritance mean?

    <p>Inheritance pattern of a trait controlled by 2 or more genes</p> Signup and view all the answers

    What is a karyotype?

    <p>Chart of metaphase chromosome pairs arranged according to length</p> Signup and view all the answers

    Study Notes

    Genetic Terms and Concepts

    • Pedigree: A visual tool used in genetics to illustrate the inheritance patterns of traits across generations.
    • Carrier: An individual with one dominant and one recessive allele for a trait, who does not exhibit the trait but can pass it to offspring.

    Development Stages

    • Fetus: Refers to a mammal in the developmental stage from the ninth week of gestation until birth.

    Inheritance Patterns

    • Incomplete Dominance: A genetic scenario where the traits of both homozygous parents blend in the heterozygous offspring, resulting in a new phenotype, with neither allele being completely dominant.
    • Codominant Allele: Situation where both alleles from homozygous parents are fully expressed in the offspring, showcasing traits from both parents equally.
    • Multiple Allele: Indicates that a single genetic trait can be influenced by more than two alleles, broadening the genetic variability.

    Chromosomal Structures

    • Autosome: Refers to the pairs of homologous chromosomes found in somatic (non-reproductive) cells, excluding sex chromosomes.
    • Sex Chromosome: Human chromosome pair (23rd pair) responsible for determining an individual's sex and carrying genes linked to sexual characteristics.

    Genetic Traits and Mechanisms

    • Sex Linked Trait: Traits that are governed by genes located on sex chromosomes, often showing differing patterns of inheritance in males and females.
    • Polygenic Inheritance: A complex pattern where multiple genes contribute to a single trait, which can exist on the same or various chromosomes, leading to a continuous range of phenotypes.

    Karyotyping

    • Karyotype: A graphical representation of an organism’s complete set of chromosomes, arranged by size and centromere location, useful for identifying chromosomal abnormalities and aneuploidy.

    Studying That Suits You

    Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

    Quiz Team

    Description

    Test your knowledge with flashcards on key terms from Chapter 12 of 'Biology: The Dynamics of Life'. This quiz covers important concepts such as pedigree, carrier, fetus, and incomplete dominance. Brush up on your genetics terminology and understanding to ace your biology studies!

    More Like This

    Human Inheritance Pedigree Quiz
    12 questions

    Human Inheritance Pedigree Quiz

    EffusiveHeliotrope8302 avatar
    EffusiveHeliotrope8302
    Genetics Pedigree Practice
    9 questions

    Genetics Pedigree Practice

    ImprovingSocialRealism4496 avatar
    ImprovingSocialRealism4496
    Use Quizgecko on...
    Browser
    Browser