biology

Project Description:

question 16
what are the chances that two individuals with wavy hair will have a curly-haired child? curly-hair and straight hair exhibit incomplete dominance.
question 16 options:

none

25%

50%

75%

100%

question 17
if one parent has type b blood and the other has type ab, what type might the child have?
question 17 options:

a or o only

b or o only

a or b only

a, b, ab only

a, b, o, or ab

question 18
traits that are controlled by several sets or pairs of alleles, such as skin color and height in humans, are the result of what form of inheritance?
question 18 options:

polygenic

incomplete dominance

multiple allele systems

simple mendelian inheritance

codominance

question 19
cold weather can change the ______ of a himalayan rabbit.
question 19 options:

genotype

phenotype

alleles

sex

question 20
hydrangeas are a flowering plant with large showy blooms. when a plant is grown in aluminum rich soil it has blue flowers; if the same plant is transplanted into soil that is lacking aluminum the flowers produced will be pink. this is an example of
question 20 options:

codominance

incomplete dominance

environmental effects

polygenetic inheritance

question 21
all of the genes on a single chromosome are
question 21 options:

a locus

homologous

a linkage map

a linkage group
question 22 (1 point)
question 22 unsaved
picture

based on figure: 24.05c, with which genes would you expect to find the highest incidence of linkage?
question 22 options:

r and s

r and g

s and g

z and g

question 23
when homologous chromosomes fail to separate during meiosis, this is termed
question 23 options:

linked genes.

disjunction.

nondisjunction.

crossover.

monosomy.

question 24
which statement is true regarding the barr body?
question 24 options:

it is found in the nuclei of females.

it is found in the nuclei of males.

it is found in the cytoplasm of males.

it is found in the cytoplasm of females.

it is a condensed inactive y chromosome.

question 25
which statement is not true about down syndrome?
question 25 options:

it is caused by a third copy of chromosome 21.

greatly increased incidence occurs with fathers over age 40.

it is usually associated with chromosomal nondisjunction in meiosis.

characteristics include mental retardation and extra eyelid folds.

affected individuals display mental retardation.

question 26
genes on the ___ chromosome determine if the sex of a child will be male or female.
question 26 options:

x

y

21st

5th

19th

question 27
if an individual has a xyy genotype, they are classified as having
question 27 options:

down syndrome.

cri du chat syndrome.

turner syndrome.

klinefelter syndrome.

jacobs syndrome.

question 28
which refers to the loss of a portion of a chromosome?
question 28 options:

inversion

translocation

deletion

duplication

monosomy

question 29
the trait diagrammed in figure 24.1 is a(n)
question 29 options:

dominant x-linked trait.

recessive x-linked trait.

autosomal recessive trait.

autosomal dominant trait.

dominant y-linked trait.

question 30
figure 24.1

using the key in figure 24.1, suppose that the genotype of the first parents was xbxb and xb y. what would be the genotype of individual number 1?
question 30 options:

xbxb

xbxb

xbxb

xby

xby
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