biology chapter 10

if a healthy person heterozygous Tt for the Tay-Sachs disease autosomal recessive allele marries a healthy individual who is homozygous TT for the dominant normal gene, the chances of them having a child with the disease is

0%

tall is dominant to dwarf in pea plants. What is the genotypic ration when two heterozygous pea plants are crossed?

1:2:1

in guinea pigs, B= black, b= brown, S= short hair, s= long hair. what would be the expected results if a BbSs mated with a BbSs?

9 black short hair, 3 black long hair, 3 brown short hair, 1 brown long hair

albinism is recessive to normal pigmentation in animals. If two albino animals were crossed, their offspring will be.....

albino

alternative forms of a gene that influence the same trait and are found at the same location in homologous chromosomes are called_______

alleles

how was Gregor Mendel's work different from that of others studying inheritance of traits before and during his time?

applied scientific method and collected data

Mendel's law of segregation implies that the two members of an allelic pair....

are distributed to the same gamete

inheritance of an autosomal dominant disorder differs from inheritance of an autosomal recessive disorder in that a dominant disorder......

can be passed on to children even if only one parent is affected by the disorder.

where are genes located in the cell?

chromosomes

In the human ABO blood grouping, there are four basic blood types, type A, type B, type AB, and type O. The blood proteins A and B are

codominant

which statement about how genotype determines phenotype is correct?

genes encode a sequence of amino acids for a particular polypeptide or protein

the particular alleles that an individual has are the individual's ________, whereas the appearance of an individual is called its________

genotype, phenotype

in snapdragons, pink flowered plants are produced when red flowered plants are crossed with white flowered plants. This type of inheritance is best described as.....

heterozygous

a diploid individual contains two alleles, for each gene. if the two alleles are the same, the individual is said to be _______ ; if the two alleles are different, the individual is said to be ______________

homozygous, heterozygous

if pairs of factors separate independently of other pairs of factors, you are dealing with the.....

law of independent assortment

what is a trait that is controlled by a combination of genes plus environmental influences?

multifactorial traits

where are autosomal traits located in an organism's genome?

non-sex chromosomes

when two or more sets of alleles affect the same trait, it is referred to as......

polygenic trait

what is a possible advantage of being heterozygous for the sickle-cell gene?

resistance to malaria

a woman with blood type B has a baby with blood type O. A man she says is the baby's father has blood type A, and because of that he denies having fathered the child. Could he be the father?

yes, if the mother is type BO and the father is AO