Question

These traits will show a range of phenotypes within a population, known as variation. 36. A sex-linked trait is a trait that is expressed from genes on either the or chromosomes. It is more likely that a sex-linked trait and its gene will be on the chromosome because it is a larger chromosome. 37. A female that has one copy of a mutated gene and one normal copy of the gene will not show the mutated phenotype, but will instead be a of the mutated phenotype. 38. Males only have one copy of the X chromosome, so they will only need one copy of a mutated X chromosome gene to have the mutated phenotype. Make a Punnet square showing the genotypes and phenotypes of offspring of a mother that is not colorblind, but is a carrier for colorblindness (X = normal, x = colorblind; her genotype is Xx) and a father that is not colorblind (his genotype is XY) below (you can do this on a separate piece of paper and take a picture - #38). F1 genotypes and percentages: _________________ F1 phenotype and percentages: _ 39. Autosomes are non-sex chromosomes and genes will therefore be on chromosomes 1-22. Individuals, regardless of gender, will have two copies of each of these genes. When a disorder or disease only occurs in an individual when it has two copies of a mutated allele that is RECESSIVE to the normal, completely dominant gene, we call it an (3 words). An example of this type of disease is ______ (3 words). These disorders tend to stay in populations because they can be masked in heterozygous individuals. Make a Punnet square showing the genotypes and phenotypes of offspring of a mother that does not have sickle cell anemia, but is a carrier for sickle cell anemia (S = normal, s = sickle cell) and a father that does not have sickle cell anemia, but is a carrier for sickle cell anemia (you can do this on a separate piece of paper and take a picture - #39).

These traits will show a range of phenotypes within a population, known as
____________________ variation.

36. A sex-linked trait is a trait that is expressed from genes on either the ______ or ______
chromosomes. It is more likely that a sex-linked trait and its gene will be on the ______
chromosome because it is a larger chromosome.

37. A female that has one copy of a mutated gene and one normal copy of the gene will not
show the mutated phenotype, but will instead be a ____________________ of the mutated
phenotype.

38. Males only have one copy of the X chromosome, so they will only need one copy of a
mutated X chromosome gene to have the mutated phenotype. Make a Punnet square showing
the genotypes and phenotypes of offspring of a mother that is not colorblind, but is a carrier for
colorblindness (X = normal, x = colorblind; her genotype is Xx) and a father that is not
colorblind (his genotype is XY) below
(you can do this on a separate piece of paper and take a picture - #38).

F1 genotypes and percentages:

_____________________________________________________________________

F1 phenotype and percentages:

_____________________________________________________________________

39. Autosomes are non-sex chromosomes and genes will therefore be on chromosomes 1-22.
Individuals, regardless of gender, will have two copies of each of these genes. When a
disorder or disease only occurs in an individual when it has two copies of a mutated allele that
is RECESSIVE to the normal, completely dominant gene, we call it an
________________________________________ (3 words). An example of this type of disease is
________________________________________ (3 words). These disorders tend to stay in
populations because they can be masked in heterozygous individuals. Make a Punnet square
showing the genotypes and phenotypes of offspring of a mother that does not have sickle cell
anemia, but is a carrier for sickle cell anemia (S = normal, s = sickle cell) and a father that does
not have sickle cell anemia, but is a carrier for sickle cell anemia (you can do this on a separate
piece of paper and take a picture - #39).

These traits will show a range of phenotypes within a population, known as
variation.

36. A sex-linked trait is a trait that is expressed from genes on either the or
chromosomes. It is more likely that a sex-linked trait and its gene will be on the
chromosome because it is a larger chromosome.

37. A female that has one copy of a mutated gene and one normal copy of the gene will not
show the mutated phenotype, but will instead be a of the mutated
phenotype.

38. Males only have one copy of the X chromosome, so they will only need one copy of a
mutated X chromosome gene to have the mutated phenotype. Make a Punnet square showing
the genotypes and phenotypes of offspring of a mother that is not colorblind, but is a carrier for
colorblindness (X = normal, x = colorblind; her genotype is Xx) and a father that is not
colorblind (his genotype is XY) below
(you can do this on a separate piece of paper and take a picture - #38).

F1 genotypes and percentages:

F1 phenotype and percentages:

39. Autosomes are non-sex chromosomes and genes will therefore be on chromosomes 1-22.
Individuals, regardless of gender, will have two copies of each of these genes. When a
disorder or disease only occurs in an individual when it has two copies of a mutated allele that
is RECESSIVE to the normal, completely dominant gene, we call it an
(3 words). An example of this type of disease is
(3 words). These disorders tend to stay in
populations because they can be masked in heterozygous individuals. Make a Punnet square
showing the genotypes and phenotypes of offspring of a mother that does not have sickle cell
anemia, but is a carrier for sickle cell anemia (S = normal, s = sickle cell) and a father that does
not have sickle cell anemia, but is a carrier for sickle cell anemia (you can do this on a separate
piece of paper and take a picture - #39).

Added by Amanda A.

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