Question

The Punnett square shown presents a cross between two piranha. Both parents have large teeth.

According to the chart, which combination describes the offspring expected from the cross?
A)
50% large-toothed and 50% small-toothed
B)
75% small-toothed and 25% large-toothed
C)
75% large-toothed and 25% small-toothed
D)
100% large-toothed

Answer 1

Do you still need help @CallMeTeddy

Answer 2

what do you think it is?

Answer 3

Yes.

Answer 4

So in punnet squares any time there is a capital letter (meaning dominant) that trait will be dominant. In this case both parent are dominant (T) for big teeth. That means that any of the boxes in the punnet square that contain a capital letter aka a dominant trait, will produce offspring with big teeth. In this punnet square you have 3 out of 4 boxes that have a dominant T, and therefore it is a 75% chance they will have big teeth and 25% chance for small teeth

Answer 5

@CallMeTeddy

Answer 6

Thanks!!!

Answer 7

Can you help with a few more? @Bookworm14

Answer 8

Your welcome! and yes, but I will not just give answers, i will expect you to try your best if you do not know the answers :) just tag me in the questions

Answer 9

oh and if you do not mind, will you give me a medal?

Answer 10

Yeah if these answers are right i will medal you.

Answer 11

Gene therapy is an integral part of genome projects. It includes the correction of abnormal genes responsible for diseases. Which of these is an application of gene therapy?
A)
The removal of cells with abnormal genes from the body by surgical methods.
B)
Designing drugs to inhibit the function of a protein coded by an abnormal gene.
C)
The introduction of a new gene that can bind with the abnormal gene to inhibit its action.
D)
The inhibition of all the genes associated with the abnormal gene to regulate their actions.

Answer 12

@Bookworm14

Answer 13

I can help

Answer 14

@CallMeTeddy can you post it in a new question plz? it helps keep os from lagging

Answer 15

Gene therapy is the use of nucleic acid polymers as a drug to treat disease by therapeutic delivery into a patient's cells, where they are either expressed as proteins, interfere with the expression of proteins, or possibly even correct genetic mutations. The most common form of gene therapy involves using DNA that encodes a functional, therapeutic gene to replace a mutated gene. In gene therapy, the nucleic acid molecule is packaged within a "vector", which is used to get the molecule inside cells within the body.

Gene therapy was first conceptualized in 1972, with the authors urging caution before commencing gene therapy studies in humans. The first FDA-approved gene therapy experiment in the United States occurred in 1990, when Ashanti DeSilva was treated for ADA-SCID.[1] By January 2014, about 2,000 clinical trials had been conducted or had been approved using a number of techniques for gene therapy.[2]

Although early clinical failures led many to dismiss gene therapy as over-hyped, clinical successes since 2006 have bolstered new optimism in the promise of gene therapy. These include successful treatment of patients with the retinal disease Leber's congenital amaurosis,[3][4][5][6] X-linked SCID,[7] ADA-SCID,[8][9] adrenoleukodystrophy,[10] chronic lymphocytic leukemia (CLL),[11] acute lymphocytic leukemia (ALL),[12] multiple myeloma,[13] haemophilia[9] and Parkinson's disease.[14] These clinical successes have led to a renewed interest in gene therapy, with several articles in scientific and popular publications calling for continued investment in the field[15][16] and between 2013 and April 2014, US companies invested over $600 million in gene therapy.[17]

The first commercial gene therapy, Gendicine, was approved in China in 2003 for the treatment of certain cancers.[18] Glybera, a treatment for a rare inherited disorder, became the first gene therapy treatment to be approved for clinical use in either Europe or the United States in 2012 after its endorsement by the European Commission

Answer 16

sorce http://en.wikipedia.org/wiki/Gene_therapy

Answer 17

if it helps medal please

Answer 18

@Bookworm14 I gave you a medal for that quistion right

Answer 19

that you answered

Answer 20

@CallMeTeddy did that help you?

Answer 21

Not really.. Too much to read... I'll open a new question