Question

1 Which of the following is true of a phenotype that is described as "skipping a generation"? it is a result of a heterozygous genotype it is a recessive phenotype it is a dominant phenotype the parents were homozygous dominant for the trait 2 Which of the following is true of a disease that is caused by a single gene found on the X chromosome of the sex chromosomes in humans? Males inherit these diseases more often than females because they have only one X chromosome in the pair of sex chromosomes. Females inherit these diseases twice as often as males, because they have two X chromosomes in the pair of sex chromosomes. Males and females inherit these diseases at an equal rate, gender does not influence the DNA all of the choices are correct 3 Which of the following statements about phenotypes is true? recessive phenotypes can be most common in a population Dominant phenotypes can be most common in a population factors in the environment can influence the expression of a phenotype like height or skin color in humans. all of the choices are correct 4 Which of the following is true of a genetic disease caused by a gene described as autosomal recessive? the disease must be carried in both families of the pedigree that produced the child with the disease. males and females inherit them in equal numbers an individual must get two recessive alleles to have the disease all of the choices are correct

          1 Which of the following is true of a phenotype
that is described as "skipping a generation"?
it is a result of a heterozygous genotype
it is a recessive phenotype
it is a dominant phenotype
the parents were homozygous dominant for the
trait
2 Which of the following is true of a disease that
is caused by a single gene found on the X chromosome of the sex
chromosomes in humans?
Males inherit these diseases more often than females
because they have only one X chromosome in the pair of sex
chromosomes.
Females inherit these diseases twice as often as males,
because they have two X chromosomes in the pair of sex
chromosomes.
Males and females inherit these diseases at an equal
rate, gender does not influence the DNA
all of the choices are correct
3 Which of the following statements about
phenotypes is true?
recessive phenotypes can be most common in a
population
Dominant phenotypes can be most common in a
population
factors in the environment can influence the expression
of a phenotype like height or skin color in humans.
all of the choices are correct
4 Which of the following is true of a genetic
disease caused by a gene described as  autosomal
recessive?
the disease must be carried in both families of the
pedigree that produced the child with the disease.
males and females inherit them in equal
numbers
an individual must get two recessive alleles to have the
disease
all of the choices are correct

Added by Martha B.

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