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An entire set of genes derived from one parent?
An entire set of genes derived from one parent
What are essential genes and non essential genes?
Essential genes are genes that are indispensable to support cellular life. These genes constitute a minimal gene set required for a living cell. Nonessential genes are the opposite. The cell can still live without them.
True or false human sperm and egg cells have 23 chromosomes?
True. Sperm and egg cells are gametes, and thus are necessarily haploid. These haploid gametes were created through the process of meiosis. When the two fuse to create an embryo, the new embryo will then have 46 chromosomes, the full number for a human. The embryo will receive one copy of each chromosome from each parent. If sperm and egg cells were to have the full set of 46 chromosomes, with both copies of each chromosome from each parent, then when they fused the embryo would have 92 chromosomes total. And the progeny of that embryo would have an even higher number of chromosomes. Having haploid gametes is necessary to maintain the stability of the species.
One set of instructions for an inherited trait?
They are called alleles.
Most differentiated cells retain?
A complete set of their genes, and retain the ability to express those genes under certain circumstances.
What is the chromosome number for an embryo?
An animal will have a full set of chromosomes (2n) as an embryo.
Do different kinds of cells in an embryo have different sets of genes?
No. With the odd exception (eg. mature red blood cells because they have no nucleus) every cell in a multicellular organism has the same set of genes. What gives the cells their different character, their phenotype, is which of these genes are expressed at any given time.
How are specialized cells formed in the human body?
Every cell in the human body (except for the red blood cells) has a full set of genetics and thus, potentially can form any specialized cell. Specialization takes place while the embryo is developing. It is done by activation of specialized genes. In any given cell nucleus, some genes are active (meaning they are synthesizing the messenger RNA which will direct the synthesis of the specific protein which that gene uses to do whatever it is that it does) and some genes are not active. Other genes called introns never synthesize anything, but instead, they regulate the expression of the genes called extrons which do synthesize RNA. Biologists have not worked out all the details, but it seems that the introns are able to respond to the cues in the embryo that tell them what kind of cell their cell is supposed to be, and then they activate the relevant extrons. Cues come in the form of the shape of the embryo, the relative position of a given cell within the embryo, and the types of cells which are near a given cell. A lot more research remains to be done on this subject.
Do all Cells have a full set of genes in their Nuclei?
Yes. Every Cell in the body, with the exception of egg and sperm Cells, has a complete set of the genes [chromosome pairs] in its nucleus and are thus diploid. The egg and sperm Cells have only half of a 'Set of Chromosomes' and are thus haploid.
An entire set of genes derived from one parent?
An entire set of genes derived from one parent
What are the functions that genes inherit?
Very many genes have their heritably determined functions 'set' to control the functions of other genes.
Identical twins have the same set of?
genes
What makes up a DNA?
When a man and a woman have a baby, in the man's sperm there is one set of genes and in the woman's egg there is only one set of genes wheras with every other cell in your body there are two sets of genes. Your last set of genes determines if you are a boy or a girl, if you are XX, you are a girl, if you are XY, you are a boy. Hope this helps.
What are essential genes and non essential genes?
Essential genes are genes that are indispensable to support cellular life. These genes constitute a minimal gene set required for a living cell. Nonessential genes are the opposite. The cell can still live without them.
What makes up a DNA profile?
When a man and a woman have a baby, in the man's sperm there is one set of genes and in the woman's egg there is only one set of genes wheras with every other cell in your body there are two sets of genes. Your last set of genes determines if you are a boy or a girl, if you are XX, you are a girl, if you are XY, you are a boy. Hope this helps.
What do you call a person entire set of genes?
genome
True or false human sperm and egg cells have 23 chromosomes?
True. Sperm and egg cells are gametes, and thus are necessarily haploid. These haploid gametes were created through the process of meiosis. When the two fuse to create an embryo, the new embryo will then have 46 chromosomes, the full number for a human. The embryo will receive one copy of each chromosome from each parent. If sperm and egg cells were to have the full set of 46 chromosomes, with both copies of each chromosome from each parent, then when they fused the embryo would have 92 chromosomes total. And the progeny of that embryo would have an even higher number of chromosomes. Having haploid gametes is necessary to maintain the stability of the species.
