exam2

Question 1

sickle cell disease is

Answer 1

caused by abnormal hemoglobin molecules

Question 2

a phenotype includes

Answer 2

all the above

Question 3

a recessive allele is

Answer 3

an allele who’s presence can be hidden

Question 4

a dominant allele is

Answer 4

an allele that expresses phenotypically even when with recessive allele

Question 5

which of the following statements is true concerning a homozygote?

Answer 5

both alleles are the same

Question 6

Mendels law of segregation states that

Answer 6

2 copies of a gene separate during meiosis

Question 7

Mendel’s law of assortment

Answer 7

each pair of alleles segregate independantly of other pairs of allowles

Question 8

a trait

Answer 8

is a characteristic passed to offspring from parents

Question 9

Characteristic of an autosomal pattern of inheritance

Answer 9

male and female affected in roughly equal numbers

Question 10

true about sex linked traits

Answer 10

fathers do not donate X chromosome to sons

Question 11

X linked recessive genetic trait

Answer 11

hemophilia

Question 12

autosomal dominant genetic disorder

Answer 12

A, B, and C

Question 13

autosomal recessive genetic disorder

Answer 13

albinism

Question 14

distinctive pattern of inheritance found for X linked recessive traits

Answer 14

hemizygous males and homozygous females affected

Question 15

which of the following is true about HD

Answer 15

many people already have children before developing

Question 16

Mitochondrial disorders

Answer 16

are passed from mother to all children

Question 17

T o F: the Y chromosome has same genes as the X chromsome

Answer 17

false

Question 18

subunits of DNA

Answer 18

nucleotides

Question 19

nitrogenous base not in DNA

Answer 19

Uracil

Question 20

Hydrogen bonds form between

Answer 20

adenine and uracil

Question 21

DNA nucleotide consists of all except

Answer 21

a ribose sugar

Question 22

When DNA is wound around a histone core

Answer 22

nucleosome

Question 23

Differences with RNA and DNA

Answer 23

all choices are correct

Question 24

all are functions of FNA polymerase except

Answer 24

detects errors in replication process and corrects mistake

Question 25

T o F: people with xeroderma pigmentosum are resistant to DNA damage from UV light

Answer 25

false

Question 26

an anticodon is

Answer 26

group of nucleotides of mRNA that ecodes info for specific amino acid

Question 27

which is true about sick cell

Answer 27

all the above

Question 28

translation is the process of

Answer 28

making protein from RNA

Question 29

RNA polymerase is an enzyme that q

Answer 29

makes pre mRNA from a DNA template

Question 30

basic subunit of protein

Answer 30

amino acid

Question 31

how many amino acids found in human protein

Answer 31

4

Question 32

all functions of protein except

Answer 32

defense molecules

Question 33

process of transcription requires

Answer 33

a DNA template

Question 34

region on DNA when RNa polymerase binds

Answer 34

promoter

Question 35

which describes flow of info

Answer 35

dna mrna protein

Question 36

translation important for

Answer 36

conversion of genetic information into protein

Question 37

hemoglobin has which protein structure

Answer 37

all the above

Question 38

first codon in protein translation is called

Answer 38

start codon

Question 39

gene regulation can be achieved by

Answer 39

use of RNA interference

Question 40

gene regulation is important because

Answer 40

different genes need to be expressed in different cells

Question 41

T o F: changing how tightly DNA is wound does not change gene expression

Answer 41

false

Question 42

Mutations are

Answer 42

changes in nucleotide sequence of DNA

Question 43

Queen Victoria

Answer 43

was source of mutation causing hemophilia

Question 44

largest source of radiation for US population

Answer 44

cosmetic radiation

Question 45

mutations that occur in __ cells can be passed on

Answer 45

sex

Question 46

standard X ray

Answer 46

1 rem

Question 47

free radical

Answer 47

a particle with an electric charge

Question 48

base analogs

Answer 48

displease natural bases and result in base transition

Question 49

DNA mutations include

Answer 49

all choices

Question 50

mutations

Answer 50

are only detected when there is a change in phenotype

Question 51

false about mutation]

Answer 51

the smaller the gene the higher the mutation rate

Question 52

a cell that has accumulated a lot of mutations can

Answer 52

all choices are correct

Question 53

epigenetics involve changes in

Answer 53

the expression of genes

Question 54

gene imprinting

Answer 54

is due to epigenetic changes

Question 55

Which statement of epigenetics is true

Answer 55

modification can be caused by environmental factors

Question 56

marriage of first cousin

Answer 56

consenguenious

Question 57

falderal act protecting privacy

Answer 57

HIPPA

Question 58

Angents causing mutations

Answer 58

mutagents

Question 59

turn ofd gene by tightly widing

Answer 59

silencing