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Patterns of Heredity Review. What mode of inheritance shows a blending of a trait?. Incomplete dominance. What is the sex of this individual?. Female. Who determines the sex of a child? . Father. Identify the disorder. Turner’s Syndrome. G.

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identify the disorder
Identify the disorder.
  • Turner’s Syndrome

G

list 2 environmental external factors that can influence gene expression
List 2 environmental (external) factors that can influence gene expression?
  • Temperature
  • Radiation
  • Light
  • Chemicals
  • Virus/Bacteria
why do sex linked traits occur more often in males than females
Why do sex-linked traits occur more often in males than females?
  • Males are missing the part of the Y chromosomes that has these traits
what is an example of a sex link trait
What is an example of a sex-link trait?
  • Hemophilia
  • Color-blindness
  • Baldness
inheritance is where more then one gene is controlling a trait
__________ inheritance is where more then ONE gene is controlling a trait

Polygenic inheritance

in a pedigree how is death notated
In a pedigree, how is death notated?
  • A slash through the symbol
slide13
The following pedigree shows individuals with blue eyes. Blue eyes are recessive to brown. What is the dad’s genotype?

I.

  • Bb

II.

is the failure of the homologous chromosomes to separate during meiosis
_____ is the failure of the homologous chromosomes to separate during meiosis

Nondisjunction

an individual with the genotype i a i for their blood type would have what blood type
An individual with the genotype IAifor their blood type would have what blood type?

A blood type

in a karyotype chromosomes are matched according to and
In a karyotype, chromosomes are matched according to ________, _______, and_____
  • Size,
  • Banding Patterns,
  • Centromere location
slide22
The following pedigree shows individuals with blue eyes. Blue eyes are recessive to brown. What is the sex of their oldest kid?

I.

  • boy

II.

is a mutation that occurs when a segment of a chromosome breaks off and is reinserted backwards
_____ is a mutation that occurs when a segment of a chromosome breaks off and is reinserted backwards

Inversion

slide24
____ mutation causes an error in DNA that adds or deletes a single base that causes all the following amino acids to be affected

Frameshift mutation

when a chromosome breaks off joins another chromosome this mutation is called
When a chromosome breaks off & joins another chromosome, this mutation is called_____

Translocation

slide31
What type of inheritance has the phenotype of the heterozygous offspring showing BOTH traits of the homozygous parents?

Codominance

what type of inheritance is shown when the trait occurs more frequently in one sex than another
What type of inheritance is shown when the trait occurs more frequently in one sex than another?

Sex-Linked

slide33
Suppose you were looking at a pedigree and you saw an individual’s genotype was labeled “R?”. What does that genotype represent?

Dominant phenotype. But, you do not know if the other allele is dominant or recessive

slide34
What type of inheritance is exhibited when there are more than 2 possible alleles for a certain trait or phenotype?

Multiplealleles

slide35
A mother who is heterozygous for type A blood marries a man who is homozygous for B blood. What are the blood genotypes of the children?
  • 50% IAIB
  • 50% IBi
what type of inheritance pattern would you use a prime to notate the alternate form of an allele
What type of inheritance pattern would you use a prime (‘) to notate the alternate form of an allele?

Incomplete dominance

slide41
The following pedigree shows individuals with blue eyes. Blue eyes are recessive to brown. What is the mom’s genotype?

I.

  • bb

II.

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