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umka21 [38]
3 years ago
7

Cell walls in plant and bacterial cells

Biology
1 answer:
Mumz [18]3 years ago
5 0
C. Fresh water hope it helps (;
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If someone with auburn hair has children with someone with red hair (but whose mother had black hair ) what are the genotype and
tensa zangetsu [6.8K]

The phenotype is - 75 % red and 25 %brown.

The genotype is hRhR - 25%

hBkhR - 50%

hBrhBk - 25%.

<h3><u>Explanation:</u></h3>

The cross given here is a simple dominant - recessive relationship between the three types of alleles of hair colour. The genes of this characteristics are present in autosomes, so will be segregated equally among all the sexes of the offsprings.

Now the genotype of auburn and red with black mother is given. So during gametogenesis, the gametes from the parents will be

Father - hBr and hR

Mother - hBk and hR

So, the probable combinations are hBrhBk, hBrhR and hBkhR.

The frequency of the combinations are 25%, 25% and 50% respectively.

The phenotypic ratio will be red : brown as 3:1.

6 0
3 years ago
Describe how science can have an effect on society
Sonja [21]

The science is very important in the evolution and the improvement of the lifestyles of the human being. The researches in the sciences help in providing conclusions, which are helpful in day to day life. The technologies and innovations make life easier by providing various tools and techniques. Also, the researches in the science provide chance to improve lifestyle by providing scientific knowledge to improve the ethics, education, justice, aesthetics etc.

3 0
3 years ago
a dna restriction enzyme cuts dna at a specific sequence. if a restriction enzyme that cuts at the dna sequence gaattc were used
vitfil [10]

Four bands appear in gel electrophoresis. Gel electrophoresis is an experimental method used to separate mixtures of DNA, RNA, or proteins by molecular size.

DNA is negatively charged, so when a current is applied to the gel, the DNA migrates towards the positively charged electrode. Fragments are ordered by size because short DNA strands migrate through the gel faster than long strands. There are some basic steps for performing gel electrophoresis outlined below. 1) pour the gel, 2) prepare the sample, 3) load the gel, 4) run the gel (expose it to an electric field), 5) stain the gel. Gel electrophoresis is a technique for separating biomolecules by size. Separation of these molecules is achieved by placing them in a small pore gel and creating an electric field across the gel

To know more about gel electrophoresis visit:

brainly.com/question/9437877?referrer=searchResults

#SPJ4

4 0
1 year ago
BRAINLIEST!!!! PLUS 50 POINTS WRONG ANSWERS WILL BE REPORTED!!!
cestrela7 [59]

It is a very interesting question - the technology is real and the research on eDNA published in a journal in 2017.

eDNA stands for enviornmental DMA sampling. It allows scientist to test water samples for the presence of the DNA of the invasive fish species. It is more effective than traditional methods of sampling because it does not require trapping or sighting of the invasive species. Water samples can be collected anywhere any time and the DNA results are as accurate and detailed as collected from the invasive species themselves. It provides a complete picture of what invasive species are there.

3 0
3 years ago
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What is the main function of DNA in a cell?
boyakko [2]
The main function of DNA in a cell is that it allows all forms of life to function, grow, and produce
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