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The Stages of Childbirth
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The Stages of Childbirth

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Questions and Answers

Which phenomenon refers to the dramatic difference in phenotype when a gene is inherited from the mother or father? (inheritance / imprint)

  • Multiple-allele inheritance
  • Genomic imprinting (correct)
  • Incomplete dominance
  • Polygenic inheritance

    • Which type of inheritance does not follow the simple dominant-recessive pattern? incomplete doesnt equal simple

  • Incomplete dominance (correct)
  • Genomic imprinting
  • Multiple-allele inheritance
  • Polygenic inheritance

    • Which type of inheritance involves genes with more than two alternate forms?

  • Multiple-allele inheritance (correct)
  • Genomic imprinting
  • Polygenic inheritance
  • Incomplete dominance

    • Which type of inheritance involves the combined effects of many genes?

    <p>Polygenic inheritance</p> Signup and view all the answers

    Which pair of chromosomes are responsible for determining gender (sex)?

    <p>The 23rd pair</p> Signup and view all the answers

    What is the genetic composition of a female?

    <p>XX</p> Signup and view all the answers

    What is the genetic composition of a male?

    <p>XY</p> Signup and view all the answers

    What determines the gender (sex) of an offspring at fertilization?

    <p>Presence or absence of an SRY gene</p> Signup and view all the answers

    What are traits that are inherited through the sex chromosomes called?

    <p>Sex-linked or X-linked traits</p> Signup and view all the answers

    Where are genes for sex-linked traits located?

    <p>On the X chromosomes</p> Signup and view all the answers

    During childbirth, which stage involves the complete dilation of the cervix?

    <p>Dilation of the cervix</p> Signup and view all the answers

    What is the placental stage of childbirth?

    <p>The time after delivery until the placenta is expelled</p> Signup and view all the answers

    What is genetics?

    <p>The passage of hereditary traits from one generation to another</p> Signup and view all the answers

    How many pairs of chromosomes do human cells (except gametes) contain?

    <p>23 pairs</p> Signup and view all the answers

    What are homologues?

    <p>The two chromosomes in a pair that contain genes that control the same traits</p> Signup and view all the answers

    What is a mutation?

    <p>A permanent heritable change in a gene that causes it to have a different effect than it had previously</p> Signup and view all the answers

    What is a genotype?

    <p>The genetic makeup of an organism</p> Signup and view all the answers

    What do dominant genes do?

    <p>Control a particular trait and also inhibit the expression of recessive genes</p> Signup and view all the answers

    What does it mean to be homozygous for a trait?

    <p>To have the same genes on homologous chromosomes</p> Signup and view all the answers

    What are the physical traits expressed by an organism called?

    <p>Phenotype</p> Signup and view all the answers

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