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Terms in this set (32)
two similar chromosomes that you inherit from your parents (one from mom one from dad) is called...
meiosis produces cells with how many chromosomes?
which of the following cell types is a diploid?
a distinguishing characteristic that can be inherited is an...
which of the following statements is true of homozygous alleles?
they are identical forms of the same traits
which law states that organisms inherit two copies of each gene and donate one copy to each of their offspring?
law of segregation
mendel knew that the variations in the offspring generations resulted from his experiences because he...
controlled the fertilization process
which pair of genes in figure 6.2 would most likely be inherited together?
A and B
recessive alleles may not be expressed because they are...
masked by a dominate allele
menders second law of genetics, the law of independent assortment, is one explanation of the
genetic variation within species
menders observation that the traits are inherited separately was based on which set of experiments?
which of the following events is an important factor in increasing variety among sexually reproducing organisms?
a person who has a disorder caused by a recessive allele is
homozygous for recessive allele
gene expression is influenced by many factors. Which of the following is a factor in gene expression?
two parents have the same genotype Gg for a genetic disorder caused by a dominant allele. What is the chance that any of their children will inherit the disorder?
3:1 or 75%
for an XX female to express a recessive sex-linked trait she must have....
2 recessive alleles
human height occurs in a continuous range because it is affected by the interaction of several genes, making it a ____ trait.
suppose a mouse is homozygous for alleles that will produce black fur and homozygous for alleles of a epistatic gene that prevents fur coloration. what color fur will the mouse have?
a female is born with attached earlobes, which is a recessive phenotype. what genotypes could her parents have?
both heterozygous, both recessive, one homozygous one heterozygous
suppose a person is a carrier for a genetic disorder, which of the following phrases about thus person is true?
does not have the disorder but can pass it off
some members of a family have a recessive sex- linked disorder. which of the following statements about the family would be true?
only females would be carriers
what is the main reason that sex-linked disorders are most often observed in males?
Y chromosome cannot mask alleles on X chromosome
what do the shaded circles on a pedigree represent?
female with disorder/ trait
suppose the first generation pea plants had flowers that were partly red and partly white instead of all pink. the relationship would be_____
how many gamete combinations could form from the following parent genotype? AaBbCCDdEEFf
if an organisms diploid number is 12, its haploid number is___?
the arctic fox is blue-grey in the summer and white in the winter. what most likely influences this change?
genes and the environment
when Gregor Mendel crossed a tall plant the F1 plants inherited___?
one allele from each parent
if a pea plants alleles are height for tt, what is true about its parents?
both have recessive allele
a breed of chicken shows codominance for feather color. one allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be_____?
black and white speckled
variation in human skin color is an example of___?
cystic fibrosis is a genetic disease where males and females must inherit 2 alleles with the mutation to have the disease. what is the mode of inheritance?
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