Question

In fruit flies, the allele for vestigial wings is recessive to the allele for normal wings. In a generation of fruit flies, 18 males and 15 females with vestigial wings are produced, and 43 males and 44 females with normal wings are produced. Which of the following is the best conclusion you can make about the parents of this generation?

Answer 1

Both parents were heterozygous for wing type.

One parent was heterozygous for wing type and the other was homozygous with normal wings.

Both parents were homozygous with normal wings.

One parent had vestigial wings and the other was heterozygous for wing type.

Answer 2

i think that its b and i need to make sure its correct

Answer 3

@Mathbreaker is b the right answer?

Answer 4

It seems like the ratio is approximately 1:3, that is for heterozygous second filial generation. so its a. Because if one is homozygous with normal wings, all the offsprings would have to be with normal wings :)

Answer 5

oh, thnx, at least u corrected me :)

Answer 6

i answered another question and i need to make sure its also correct just in case, can u see?

Answer 7

The human genome project has allowed for great progress in identifying genetic markers for disease. Which of the following would be considered an ethical misuse of this information?

Providing guidance to the individual based on the genetic information collected

Sharing genetic information with an individual's designated medical professionals

Allowing scientists to add an individual's genetic information to a body of information about the disease

Using an individual's genetic information to decide who can be covered for health insurance (i think this is the right answer)

Answer 8

@Mathbreaker

Answer 9

yes, the last one is both ethically and commercially noncompetitive, however, it would have benefits for the company, but its the right answer

Answer 10

yay! i feel so smart, thank u :)

Answer 11

You are :)

Answer 12

ur awesome :P

Answer 13

can u see if another question that i answered is correct plz?

Answer 14

Sure :)

Answer 15

While mRNA strands are being created, a sequence is sometimes miscopied. What is the worst that could happen to a cell should this take place?

The cell will not make functional proteins from that mRNA strand.

The cell will die once it tries to use that strand of mRNA.

The cell will have to destroy any ribosomes that use the mRNA strand.

The cell will pass the mRNA on to all the cells made from it. (is it this one?)

Answer 16

Im pretty sure its The cell will not make functional proteins from that mRNA strand.
Because the sequence is miscopied in the first place. :/

Answer 17

ohhhhh

Answer 18

because if it is functional, then there is no problem and the first assumption will be the same

Answer 19

i understand now, thnx

Answer 20

can u see if another one is correct?

Answer 21

If a mutation occurs in a body cell and the mutation changes the phenotype of the individual, what will happen to the offspring of the individual?

The offspring may or may not inherit the new phenotype.

The offspring will inherit neither the genotype nor the phenotype change. (is this one correct?)

The offspring will inherit the new phenotype.

The offspring will inherit the change in genotype but not the phenotype change.

Answer 22

The answer is A, because if a mutation occurs, then it leaves a 50:50 chance of a mutation occuring in the offspring depending upon the chromosomes associated. So i think its A :) But i could be wrong.

Answer 23

wow, u r really smart :)

Answer 24

can u see if another is correct plz?

Answer 25

Sure :)

Answer 26

If a mutation occurs in a body cell and the mutation changes the phenotype of the individual, what will happen to the offspring of the individual?

The offspring may or may not inherit the new phenotype.(this one)

The offspring will inherit neither the genotype nor the phenotype change.

The offspring will inherit the new phenotype.

The offspring will inherit the change in genotype but not the phenotype change.

(am i kinda bothering u w too many questions?)

Answer 27

Youre not bothering me, and by the way, this is the same question as before :/

Answer 28

oh im so sorry

Answer 29

Why must cells be able to both transcribe and replicate their DNA?

The cell's DNA must be transcribed before it can be replicated.

New cells can only be created after transcription has taken place.

Transcription can be used when a cell is unable to replicate.

Replication creates new DNA while transcription creates mRNA. (is this correct?)

Answer 30

DNA is transcribed into mRNA which is translated into proteins so yes you are correct :)

Answer 31

yay! thnx so much, i would love to give u another medal, but i cant :/

Answer 32

can u plz help me w this one?

Codominance is a form of inheritance in which two different alleles for a gene are both expressed, and neither allele is dominant over the other. One example of codominance is fur color in cattle; the alleles for red fur and white fur are codominant. If a homozygous red cow and a homozygous white bull mate, what would you expect to find in their offspring?

They will all have white fur.

Their fur will be a mixture of red and white hairs.

Their fur will be pink.

They will all have red fur.

Answer 33

Its b, because its a F2 gen of RR and rr mixed so itll always be Rr, showing co-dominance

Answer 34

i get it now thank u very much :)

Answer 35

Youre welcome :D

Answer 36

can u help w this one plz?

Color-blindness is a x-linked recessive disease. Under what circumstances will this condition manifest in a child?

If the child is a male and its mother has the recessive allele.

If the child is a female and its father has the recessive allele.

If the child is a female and its mother has the recessive allele

If the child is a male and its father has the recessive allele.

Answer 37

Its A, i gotta go, but its the right answer
good night :)

Answer 38

alright, thank u soo much and good night :)

Answer 39

hey @Potatoes.ramu can u help me w a couple of questions plz?

Answer 40

Sure! :)

Answer 41

thnx! :)

Answer 42

jIf a tRNA molecule has an anticodon which reads AUG, what was the codon of the mRNA molecule?

CGU

TAC

TAG

UAC

(i really dont know which one)

Answer 43

*if

Answer 44

UAC Adenine to Uracil
and vice versa
And Guanine to Cytosine :)

Answer 45

thank u!

Answer 46

No problem! :)

Answer 47

wat about this one?

During meiosis, homologous sets of four chromatids are lined up along the cell's equator, attached to spindle fibers. Which of the following processes will happen next?

Anaphase I

Telophase II

Prophase I

Metaphase II

Answer 48

Anaphase 1

Answer 49

ur smart :)

Answer 50

this one?

During cell division, centromeres have separated, and chromatids are pulled apart, becoming chromosomes. What happens after the chromosomes are pulled to opposite ends of the cell?

Prophase

Anaphase

Metaphase

Telophase

Answer 51

i think its the last one, but im not sure

Answer 52

During Anaphase 1 spindle fibres pull homologous chromosomes and centromeres toward opposite poles of the spindle. So the chromosomes, are separated into 2 haploid sets! The chromosome number becomes half!

Answer 53

ohhh, i get it

Answer 54

Yeah that's Telophase!!

Answer 55

yay! thnx!

Answer 56

Anytime :)

Answer 57

wat about this one?

A body cell is in the longest stage of its life cycle. The cell grows, synthesizing proteins and increasing in size. Eventually, the cell will grow too large to carry out normal activities and begin mitosis. Which phase is the cell in?

G2

Cytokinesis

G1 (i think this is the right answer)

S

Answer 58

Future times please only post one question per post.

Answer 59

ok.. sorry

Answer 60

It is G1. @mahone331 You don't need me! You're managing perfectly fine! :)

Answer 61

It is also called post mitotic gap phase :)

Answer 62

lol, thnx. but its always good to have anothers pov just in case

Answer 63

can i ask u another, bc this one is hard?

Answer 64

Review the process outlined below. What will be the result if the replication process is followed as described?

1. DNA separates into two strands
2. The nitrogenous bases on the original strands code to arrange the new strands
3. The separated DNA builds new complementary strands
The RNA sequence will begin.

A. The base hydrogen bonds will be broken.

B. Two new complementary strands of DNA will be built.

C. Two new base pairs will be built.

D. Two new base pairs will be built.

Answer 65

@Potatoes.ramu

Answer 66

I'm not sure about this :(

Answer 67

And I don't want to mislead you. it's been like 4 years since I studied this :(

Answer 68

its alright, u dont really have to answer if u dont want to or if u cant