Chapt 2

Question 0

A recessive trait is created when
at least one parent contributes a dominant allele
one parent contributes a recessive allele
each parent contributes a recessive allele
only one parent is a carrier of a recessive Gene

Answer 0

c

Question 1

A           is a directly observable characteristics
phenotype 
genotype 
chromosome 
zygote

Answer 1

a

Question 2

chromosomes
store and transmit genetic info
always come In XY pairs 
are located outside the nucleus 
are inherited from my mother only

Answer 2

a

Question 3

chromosomes are made up of a chemical substance called cytoplasm
mitosis
meiosis
DNA

Answer 3

d

Question 4

genes
are duplicated through a process known as meiosis.
must be of uniform length or birth defects will occur .
receive instructions for protein production from the cytoplasm .
are segments of DNA along the length of the chromosome.

Answer 4

d

Question 5

\_\_\_\_are the sex cells and contains \_\_\_\_\_\_ chromosomes.
gametes; 23 pairs of. 
Zygote; 46. 
Gametes; 23. 
Autosomes ;23 Pairs of.

Answer 5

c

Question 6

Genotype
is a directly observable characteristic.
refers to genetic makeup of an individual .
reflects on individuals physical and behavioral characteristics determined by environmental and genetic factors .
is a rodlike structures in the cell nucleus that transmits genetic info.

Answer 6

b

Question 7

The person who's 23rd pair of chromosome is XY 
has Turner syndrome 
has PKU 
has down syndrome 
is male

Answer 7

d

Question 8

A zygote that duplicates and separates into two clusters of cells produces
sickle cell anemia.
Klinefelter syndrome. 
Identical twins. 
Fraternal twins.

Answer 8

c

Question 9

it's a pair of genes contains two different versions of the gene the pair is
heterogeneous. 
Homogeneous. 
Homozygous
 Heterozygotes.

Answer 9

d

Question 10

D is a symbol for dark-haired allele. d is a symbol for blond haired allele. four children have the following allele pairs: Lizzie has DD ,Lena has Dd, Lyle has dD ,and Laura has dd. which child is considered recessive homozygous and has blonde hair?

Answer 10

Laura

Question 11

A heterozygous individuals with just one  recessive gene is referred to as
x-linked 
homozygous 
a carrier 
polygenetic

Answer 11

c

Question 12

why are males more likely to be affected negatively than females by X-linked inherited traits?

Answer 12

any recessive allele On one X chromosome has a good chance of being suppressed by a dominant allele on the other X chromosome

Question 13

____ is a sudden but permanent change and a segment and DNA that can create____
mitosis; modifier genes.
genetic imprinting; codominance. Meiosis; X-linked inheritance. Mutation; genetic abnormalities.

Answer 13

d

Question 14

continually varying traits, such as height, musical ability, or intelligence are more likely determined by \_\_\_\_ inheritance.
codominance.
Xlinked. 
Polygenetic. 
Dominant recessive.

Answer 14

c

Question 15

a \_\_\_\_ measures the extent to which individual differences in complex traits such as intelligence and personality are due to genetic factors.
kinship rate. 
Heritability estimate. 
Factor analysis. 
Concordance rate.

Answer 15

b

Question 16

abnormalities of the sex chromosomes Are typically recognized when
an ultrasound is carried out during the final trimester of pregnancy.
An infant shows clear patterns of mental retardation.
The child fails to undergo puberty at a normal time.
A fetiscopy is performed during pregnancy.

Answer 16

c

Question 17

mr. and Mrs. Hawkins would like to have a baby but are concerned about the prevalence of sickle cell anemia in their family. which of the following would you recommend to help them determine the chances of giving birth to a baby with this hereditary disorder?
prenatal diagnostic procedures. Genetic counseling.
Fetal medicine.
Genetic engineering.

Answer 17

b

Question 18

according to the ecological systems theory the behaviors of each family member affects those of others. this represents the concept of \_\_ influences.
predetermined 
universal 
learned
 bidirectional

Answer 18

d

Question 19

except for ____ and ____ prenatal diagnosis should not be used routinely, since other methods have some chance of injury to the fetus

Answer 19

maternal blood analysis; ultrasound

Question 20

higher SES parents desire ____for their children, where as lower SES parents _____emphasize.

Answer 20

psychological traits; external characteristics

Question 21

Suppose the heritability estimate for a certain traits such as liking spicy foods is 1.00. If true, this will mean that all the differences and food tastes between children result from differences in their

Answer 21

genetic makeup

Question 22

according to the concept of genetic environmental correlation, our genes influence

Answer 22

The environment to which we are exposed

Question 23

identical twins reared apart are likely to have similar hobbies friends and jobs explains the concept of

Answer 23

niche picking

Question 24

according to the concept of range of reaction, heredity _____ responsiveness to various environments

Answer 24

limits

Question 25

is there a Difference in the likelihood of inheriting recessive disorders on the AutoSomes or on the sex chromosomes?

Answer 25

yes because the autosomes Don’t refer to the sex of the baby the sex chromosomes do