Please help me with this bio question

Biology

1 answer:

snow_tiger [21]3 years ago

7 0

C. Each cell contains the same set of DNA but different genes are turned on or off depending on the cell's function.

Hope it helps!

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Outline two importance of planning meals

galina1969 [7]

Answer:

Keeps the body healthy and fit

nutrition is likely to be function better

4 0

3 years ago

A mother carries one allele of a recessive gene for a disease on an autosome, and the father carries no recessive alleles of the

kifflom [539]

What is the likelihood of their child having the disease is:

A. 0%

Explanation:

The mother is heterozygous, thus she has an allele which is recessive and the other allele which is dominant.
The father has no recessive allele for the gene.
During meiosis in mother , two types of gametes will be produced. One type of gamete will have the recessive allele and the other type of gametes will have dominant allele.
During meiosis in father, only one type of gametes will be formed which will have the dominant allele only.
In a situation a female gamete with recessive allele is fertilized by a male gamete with dominant allele. The resulting zygote will be heterozygous.The effect of the recessive allele will be masked by the dominant allele and the child will not have the disease.
In a situation a female gamete with the dominant allele is fertilized by a male gamete with dominant allele then the resulting zygote will be homozygous for dominant allele and obvioiusly the individual will not have the disease.
Thus, in this case we can conclude that there is 0% chance of child having the disease.

3 0

3 years ago

What type of tissue makes up the endothelium of capillaries?

Citrus2011 [14]

In capillaries, the outer tunics of smooth muscle cells are absent and only the endothelium is present. Capillaries are often invested in pericapillary contractile cells called pericytes. The layer of endothelial cells is a type of epithelium and is bounded at its outer surface by a basement membrane.

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3 years ago

When cell division is complete, compare the amount of chromosomes in each daughter cell to the original cell?

BabaBlast [244]

The two kinds of basic cell division include mitosis and meiosis.

Mitosis is where a parent cell divides and produces 2 genetically indentical daughters cells. So this means that when the cell division is complete, the number and even the sequence of chromosomes is exactly same as the original parent cell.

And in meiosis, also called reduction division, is where the parent cell divides and produces 4 genetically different daughter cells, which has only half of the number of chromosomes than that of the original parent cell. This process has to go through 2 times of divisions.

Mitosis is usually seen in most somatic cells, it is very important to activities such as growth, repair etc. Meanwhile, meiosis is seen in gametes, and its important for sexual reproduction.

8 0

4 years ago

Describe the construction of a recombinant plasmid containing the gene for the green fluorescent protein (GFP) and the insertion

zubka84 [21]

Answer:

A recombinant plasmid contains one or more genes of interest and different DNA elements that are used with multiples objectives, for instance, to report gene expression (like GFP protein), to stimulate transcription (i.e., promoters), etc. All these sequences are added into the plasmid vector in a series of sequential steps.

Explanation:

The steps to design a recombinant plasmid are the following:

1- it is necessary to open the plasmid with restriction enzymes to insert the genes of interest and further DNA elements (for instance, lac promoter, transcription termination sequences, etc). In this case, we need to insert the Green Fluorescence Protein (GFP). GFP is used as a reporter gene, it means that this protein is required for detecting the expression of the gene of interest,

2- the sequences to be inserted into the plasmid are amplified by PCR (DNA cloning),

3- after insertion, the DNA molecule is closed by using DNA ligases,

4- the plasmid is inserted by transformation into the host bacterial genome. Transformation is a genetic process where DNA is exchanged between the plasmid and its host genome,

5- finally, the plasmid-carrying bacteria are grown to produce proteins of interest.

4 0

3 years ago