Question

Which of the following is a genotype?
Answer

TA

ta

Tt

none of these

*My answer is: Tt

Answer 1

@LoverofWords @Pompeii00 @stefrheart

Answer 2

I agree

Answer 3

An organism with the genotype TtSs can normally make all of the following gamete combinations except:
Answer

TS

TT

Ts

tS

*My answer is TT

Answer 4

You're right!! :D

Answer 5

Hello @aliboo997 . Thanks for your comments. Please help me correct these answers. Thanks

Answer 6

& you're right again.

Answer 7

They're both right. :)

Answer 8

The segregation of alleles occurs during:
Answer

mitosis

binary fission

meiosis

none of these

*Meiosis

Answer 9

Meiosis is right.

Answer 10

The probability that a monohybrid cross of two heterozygotes will produce an individual exhibiting the recessive trait is:
Answer

3/4

1/4

100%

1/16

*1/4

Answer 11

1/4, ya.

Answer 12

Sex-linked genes are more likely to be expressed in:
Answer

males

females

both males and females equally

none of these
*males

Answer 13

@StudiousA

Answer 14

Males inherit their Y chromosome from:
Answer

their mother

their father

their mother's father

either parent
*their father

Answer 15

For the sex-link one, I believe its males.

Answer 16

and the last one is right.

Answer 17

When a recessive trait is on the X chromosome:
Answer

males will never express it

females will always express it

males can express it more often than females will

it will only be expressed in 1/4 of the offspring
*males can express it more often than females will

Answer 18

One clue that a trait might be sex-linked is that:
Answer

it is more common in females than in males

it occurs in each sex equally

it is more common in males than in females

it only is seen in a homozygote
*it is more common in males than in females

Answer 19

first one is right, and the second one is right also.

Answer 20

When two extreme phenotypes are crossed and all of the progeny have an intermediate phenotype, what might be the cause?
Answer

complete dominance of one trait over another

incomplete dominance

codominance

sex linkage
*incomplete dominance

Answer 21

A mutation is:
Answer

any change in the information stored on the RNA molecule

any change in the information stored in the DNA molecule

impossible and has never been observed

of no value to the evolutionary fitness of a species
*any change in the information stored in the DNA molecule

Answer 22

incomplete dominance,

Answer 23

Which of these human genetic conditions CANNOT be diagnosed by a karyotype?
Answer

Down syndrome

Huntington's disease

Kleinfelter syndrome

Jacobs syndrome

*Huntington's disease

Answer 24

Tay-Sachs disease is prominent among:
Answer

African-Americans

Italian-Americans

Native Americans

Jewish-Americans

*Jewish-Americans

Answer 25

any change in the information stored in the DNA molecule and huntingtons disease is right.

Answer 26

jewish-americans is right.

Answer 27

When someone is said to be a carrier for a genetic disease, their genotype is:
Answer

homozygous dominant

heterozygous

homozygous recessive

incompletely dominant

*homozygous recessive

Answer 28

The period of time referred to as the "Golden Age of genetics" was:
Answer

the 1860s

the early 1900s

the 1950s

the 1990s

*the early 1900s

Answer 29

A nucleotide consists of all of the following except:
Answer

sugar

nitrogenous base

lipid

phosphate group

*lipid

Answer 30

Assume that the two parent strands of DNA have been separated and that the base sequence on one parent strand is A-T-T-C-G-C; the DNA base sequence that will complement that parent strand is:
Answer

G-C-C-A-T-C

G-A-T-T-A-C

T-A-A-C-G-C

T-A-A-G-C-G

*T-A-A-G-C-G

Answer 31

homozygous recessive, the early 1900s, I believe it's lipid, and the last one seems right.

Answer 32

Bacteriophage viruses have which of the following macromolecules?
Answer

DNA and lipid

DNA and RNA

DNA and sugars

DNA and protein

*DNA and protein

Answer 33

DNA and protein, yep.

Answer 34

DNA lacks which of these atoms?
Answer

carbon

sulfur

phosphorous

nitrogen
*sulfur

Answer 35

Sulfur is correct.

Answer 36

DNA is described best as:
Answer

a triple helix

a double helix

a single helix

*a double helix

Answer 37

correct.

Answer 38

The tool used to show the structure of DNA was:
Answer

mass spectroscopy

gravity centrifugation

X-ray diffraction

electron microscopy

*For this, I really don't know. What do you think?

Answer 39

The two strands of the DNA molecule are said to be:
Answer

complementary

polite

antiparallel

a and c

a and b

*This one I am not so sure. but my guess is a and c

Answer 40

If the mRNA acts as a "blueprint" for the construction of a protein, the tRNA acts as the:
Answer

"construction site" where the protein is made

"truck" that delivers the amino acids at the right time

"building materials" that will be used to construct the protein

"construction foreman" who oversees protein production
*"truck" that delivers the amino acids at the right time

Answer 41

If the codon is CGC, the anticodon on the tRNA molecule is:
Answer

GCG

ATA

CGC

TAU

*GCG

Answer 42

RNA lacks which of these nitrogenous bases?
Answer

A

U

T

G
*T

Answer 43

The process of making a RNA version of a gene is:
Answer

replication

translation

transcription

reverse transcription

*transcription

Answer 44

I wanna say electron microscopy, for the tool used to show structure.

Answer 45

yes...ok

Answer 46

the 2 strands are a and c like you said.

Answer 47

oh..ok..i see :)

Answer 48

"truck"....right time.

Answer 49

yes. <3

Answer 50

GGG.

Answer 51

thanks for the medal! :)

Answer 52

No problem, bestie. You're totally deserve it

Answer 53

Sorry.. is it GCG you mean?

Answer 54

Oh thats a C? haha yes, sorry.

Answer 55

T is correct.

Answer 56

yes...i see

Answer 57

transcription.

Answer 58

Which of the following is TRUE of both DNA and RNA?
Answer

both are double stranded nucleic acids

both have nucleotides that contain ribose sugars

both are found on the endoplasmic reticula within cells

both use the nucleotide base guanine
*both use the nucleotide base guanine

Answer 59

Restriction enzymes:
Answer

weld together fragments of DNA

attach to DNA molecules at specific sites and cut both strands of DNA at that place

only cut RNA molecules at specific sites and cut both strands of DNA at that place

are chemical machines that make parts of the cell membrane.

*attach to DNA molecules at specific sites and cut both strands of DNA at that place

Answer 60

both use nucleotide... correct.

Answer 61

attach to DNA.. yes.

Answer 62

DNA ligase:
Answer

links together segments of DNA

attaches to DNA molecules at specific sites and cuts both strands of DNA at that place

only cuts RNA molecules at specific sites and cuts both strands of DNA at that place

is a chemical machine that makes parts of the cell membrane

*links together segments of DNA

Answer 63

I wanna say you're correct.

Answer 64

Gene pharming involves:
Answer

the use of transgenic farm animals to produce pharmaceuticals

the use of pharmaceutical drugs to induce genetic mutations in crops

an email scam from a foreign country

is a chemical machine that makes parts of the cell membrane

*the use of transgenic farm animals to produce pharmaceuticals

Answer 65

Vectors are:
Answer

DNA molecules used to carry foreign DNA fragments into bacteria or other cells

DNA molecules that can be joined with DNA fragments that are to be cloned

RNA molecules that can be joined with DNA fragments that are to be cloned

large eukaryotic chromosomes
*DNA molecules that can be joined with DNA fragments that are to be cloned

Answer 66

Polymerase chain reaction (PCR):
Answer

is a relatively simple and is a fast way of copying very small amounts of DNA

was developed during the 1980s

resulted in its discoverer sharing a Nobel Prize

all of these

*is a relatively simple and is a fast way of copying very small amounts of DNA

Answer 67

I believe gene farming is the use of pharmaceutical drugs to induce genetic mutations in crops.

Answer 68

Vectors are DNA molecules used to carry foreign DNA fragments into bacteria or other cells

Answer 69

For the PCR, I wanna saw all of those are true.

Answer 70

For the gene faming, this website http://www.weegy.com/?ConversationId=68714754 says the same thing I said. Only 3 links pop up for this question when I googled it. Two of them have the same thing I put and the WuHu website has what you put.

Answer 71

So i dunno .-.

Answer 72

The vector one is correct.

Answer 73

And the PCR one is correct as well. http://www.weegy.com/?ConversationId=BCD68E5C

Answer 74

Sorry. For the vectors. Did you mean I am correct or you are? :)

Answer 75

Thats one way you can check your answers, because many people have the same questions as you and they might have posted it on open study or another website.

Answer 76

When I googled the vector question, my answer showed up.

Answer 77

Ok...I will trust in you, my friend. Hope it correct

Answer 78

The current estimate of the number of genes in the human genome is:
Answer

1000

24,000

100,000

50,000

*24,000

Answer 79

Sufferers of Kleinfelter syndrome are male.
Answer True False

*true

Answer 80

Sickle-cell disease is prominent among Native Americans.
Answer True False
*false

Answer 81

24,00 is correct. True, and False.

Answer 82

Thanks. Ok...it's very late. Sweet dreams my friend. Hope to see ya tomorrow

Answer 83

Ok. :) Goodnight.