Review Pedigrees Sex -Linked Genetic Randoms Anything under the Sun Eleanor M. Savko Review Pedigrees Sex -Linked 9/21/2018 Genetic Randoms Anything under the Sun 1pt 1 pt 1 pt 1pt 1 pt 2 pt 2 pt 2pt 2pt 2 pt 3 pt 3 pt 3 pt 3 pt 3 pt 4 pt 4 pt 4pt 4 pt 4pt 5pt 5 pt 5 pt 5 pt 5 pt

Eleanor M. Savko 9/21/2018 What is homozygous?

Eleanor M. Savko 9/21/2018 Two of the same alleles?

Eleanor M. Savko 9/21/2018 What two gametes could Pp be split into?

Eleanor M. Savko 9/21/2018 P and p

Disorder is characterized by trisomy 21? Eleanor M. Savko 9/21/2018 What nondisjunction Disorder is characterized by trisomy 21?

Eleanor M. Savko 9/21/2018 Down Syndrome

Eleanor M. Savko 9/21/2018 A somatic( body) cell has ___________ the number of chromosomes as a sperm cell.

Eleanor M. Savko 9/21/2018 Double/Twice

What sex is represented by a square? Eleanor M. Savko 9/21/2018 What sex is represented by a square?

Eleanor M. Savko 9/21/2018 Male

What does it mean if a symbol is colored in? Eleanor M. Savko 9/21/2018 What does it mean if a symbol is colored in?

Eleanor M. Savko 9/21/2018 The individual has the Trait.

If only men have the trait, What type of inheritance is it? Eleanor M. Savko 9/21/2018 If only men have the trait, What type of inheritance is it?

Eleanor M. Savko 9/21/2018 Sex-linked.

What sex is individual IV-8? Eleanor M. Savko 9/21/2018 What sex is individual IV-8? Do they have the trait?

Eleanor M. Savko 9/21/2018 Female Yes

Is the trait dominant or recessive? Eleanor M. Savko 9/21/2018 Is the trait dominant or recessive?

Eleanor M. Savko 9/21/2018 Recessive

This trait is x-linked, recessive, what is Sue’s genotype? Eleanor M. Savko 9/21/2018 Bob Sue Kay This trait is x-linked, recessive, what is Sue’s genotype?

Eleanor M. Savko 9/21/2018 XHXh

Eleanor M. Savko 9/21/2018 What is sex-linked?

A trait that is linked To the sex Chromosomes! Eleanor M. Savko 9/21/2018 A trait that is linked To the sex Chromosomes!

What is the genotype of a male with a recessive x-linked trait? Eleanor M. Savko 9/21/2018 What is the genotype of a male with a recessive x-linked trait?

Eleanor M. Savko 9/21/2018 XrY

What is a disorder we talked about Eleanor M. Savko 9/21/2018 What is a disorder we talked about That is sex-linked?

Eleanor M. Savko 9/21/2018 Hemophilia or Colorblindness

If a color-blind man has the genotype XcY Eleanor M. Savko 9/21/2018 If a color-blind man has the genotype XcY What would the genotype of a color-blind woman be?

Eleanor M. Savko 9/21/2018 XcXc

How do you know if a pedigree is showing sex-linked traits? Eleanor M. Savko 9/21/2018 How do you know if a pedigree is showing sex-linked traits?

Only one sex is showing the trait! Eleanor M. Savko 9/21/2018 Only one sex is showing the trait!

Eleanor M. Savko 9/21/2018 What is heterozygous?

Eleanor M. Savko 9/21/2018 Two different alleles Hh

How could a child get a disorder if neither parent has it? Eleanor M. Savko 9/21/2018 How could a child get a disorder if neither parent has it?

carriers/heterozygous Eleanor M. Savko 9/21/2018 The parents must be carriers/heterozygous

Eleanor M. Savko 9/21/2018 What is a phenotype?

The physical trait, what the gene will look like Eleanor M. Savko 9/21/2018 The physical trait, what the gene will look like (brown hair)

Eleanor M. Savko 9/21/2018 What is genotype?

The allele combination: HH, hh, Hh. Eleanor M. Savko 9/21/2018 The allele combination: HH, hh, Hh.

Eleanor M. Savko 9/21/2018 Tay-Sachs is a recessive, lethal genetic disease. A homozygous unaffected male crosses with a carrier female, what are their chances of having a child with the disease?

Eleanor M. Savko 9/21/2018 0 % HH x Hh will never make hh!

Sperm cells of the Russian dwarf hamster contain 14 chromosomes Sperm cells of the Russian dwarf hamster contain 14 chromosomes. What is the total number of chromosomes that would be contained in a normal, newly formed zygote of this species? Eleanor M. Savko 9/21/2018

Eleanor M. Savko 9/21/2018 28

Eleanor M. Savko 9/21/2018 In humans, pigmented skin is dominant to non-pigmented skin (albinism). What is the genotype of an individual with albinism?

Eleanor M. Savko 9/21/2018 Homozygous recessive aa

Horses born to 2 palomino (golden-coated) horses have a 25% chance of having a white coat, a 25% chance of having a chestnut (brown) coat, and a 50% chance of having a palomino coat. Which description of inheritance best explains the coat-color trait in these horses? Eleanor M. Savko 9/21/2018

Eleanor M. Savko 9/21/2018 Coat color is co-dominant

Eleanor M. Savko 9/21/2018 XXY is what disorder?

Eleanor M. Savko 9/21/2018 Klinefelters

Eleanor M. Savko 9/21/2018 The genotype for F1 individuals from a dihybrid cross is AaBb x AaBB. What is the expected ratio of AaBb individuals in the F2 generation?

Eleanor M. Savko 9/21/2018 4/16 or 1/4