Chapt 2 Flashcards
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
c
A is a directly observable characteristics phenotype genotype chromosome zygote
a
chromosomes store and transmit genetic info always come In XY pairs are located outside the nucleus are inherited from my mother only
a
chromosomes are made up of a chemical substance called cytoplasm
mitosis
meiosis
DNA
d
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.
d
\_\_\_\_are the sex cells and contains \_\_\_\_\_\_ chromosomes. gametes; 23 pairs of. Zygote; 46. Gametes; 23. Autosomes ;23 Pairs of.
c
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.
b
The person who's 23rd pair of chromosome is XY has Turner syndrome has PKU has down syndrome is male
d
A zygote that duplicates and separates into two clusters of cells produces sickle cell anemia. Klinefelter syndrome. Identical twins. Fraternal twins.
c
it's a pair of genes contains two different versions of the gene the pair is heterogeneous. Homogeneous. Homozygous Heterozygotes.
d
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?
Laura
A heterozygous individuals with just one recessive gene is referred to as x-linked homozygous a carrier polygenetic
c
why are males more likely to be affected negatively than females by X-linked inherited traits?
any recessive allele On one X chromosome has a good chance of being suppressed by a dominant allele on the other X chromosome
____ 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.
d
continually varying traits, such as height, musical ability, or intelligence are more likely determined by \_\_\_\_ inheritance. codominance. Xlinked. Polygenetic. Dominant recessive.
c
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.
b
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.
c
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.
b
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
d
except for ____ and ____ prenatal diagnosis should not be used routinely, since other methods have some chance of injury to the fetus
maternal blood analysis; ultrasound
higher SES parents desire ____for their children, where as lower SES parents _____emphasize.
psychological traits; external characteristics
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
genetic makeup
according to the concept of genetic environmental correlation, our genes influence
The environment to which we are exposed
identical twins reared apart are likely to have similar hobbies friends and jobs explains the concept of
niche picking
