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zmey [24]
2 years ago
6

A young man wants to determine if he is a descendant of Henry of Navarre and Eleanor of Aquitainetwo of his favorite historical

characters. He sends a cheek swab to a DTC company and is offered a choice (due to funding): The company can assess either the sequence of the man's Y chromosome or his mitochondrial DNA. Which should he choose?
Biology
1 answer:
Gnesinka [82]2 years ago
8 0

Answer:

He should get his mitochondrial haplotype sequenced, given the genetic variation in mitochondrial sequences compared to Y chromosomes.

Explanation:

A haplotype is a group of genes within an organism that was inherited together from a single parent. The word "haplotype" is derived from the word "haploid," which describes cells with only one set of chromosomes, and from the word "genotype," which refers to the genetic makeup of an organism.

Genetic variation is a term used to describe the variation in the DNA sequence in each of our genomes. Genetic variation is what makes us all unique, whether in terms of hair color, skin color or even the shape of our faces.

The typical metazoan mitochondrial DNA (mtDNA) is a double-stranded circular DNA molecule, which encodes a conserved set of 37 genes, including 13 protein-coding genes (PCGs) plus the two ribosomal RNA (rRNA) genes and 22 transfer RNA (tRNA) genes.

This, together with other special characteristics such as faster evolutionary rates than nuclear genes, presumed maternal inheritance, and absence of recombination makes mitochondrial DNAs one of the most popular targets for population genetics studies and accurate identification.

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What was the term in the Gilded Age for a new emasculated condition that marked by depression,indigestion, hypochondria, and ext
Whitepunk [10]

Answer:

Neurasthenia

Explanation:

The gilded age refers to the last decades of the nineteenth century that is between the 1870s to about 1900.

The medical term which was used during the Gilded age to refer to the condition caused by the weakness of the nerves or nervous breakdown or nervous illness is Neurasthenia.

The Neurasthenia was marked by the symptoms of the depression, the fight or flight responses such as indigestion, the nervousness and the irritability.

Thus, Neurasthenia is the correct answer.

8 0
2 years ago
What type of molecule can easily diffuse through the plasma membrane without any help? Why?
babunello [35]
Water diffusion is called osmosis. Oxygen is a small molecule and it's nonpolar, so it easily passes through a cell membrane. Carbon dioxide, the byproduct of cell respiration, is small enough to readily diffuse out of a cell. Small uncharged lipid molecules can pass through the lipid innards of the membrane.
7 0
2 years ago
Which statement explains the effect of temperature on the rate of photosynthesis
marusya05 [52]

Answer:As temperature increases, the rate of photosynthesis constantly increases.

Explanation:

7 0
2 years ago
Can Someone please help me with these punnett square problems both #3 & #4 ?
kiruha [24]

a. 25%

b.75%

c. 50%

d. Male cats have only one X chromosome in their DNA meaning that they should be unable to inherit different colours.

5 0
3 years ago
Turgor pressure is the pressure exerted on a plant cell wall by water. When wilted plants are placed in water, they demonstrate
Rus_ich [418]

Answer: When wilted plants are given water, it enters the cell generating turgor and giving a firmer appearance, and this water is stored in the vacuoles.

Explanation:

Turgor is a phenomenon in plant cells in which the cell expands due to the pressure exerted by the fluids and also by the cell content on the walls. It is related to osmosis, since the external pressure is usually very high and this internal pressure dilates the cell as much as the elasticity of the membranes allows. <u>Then, the cells swell by absorbing water, tensing the membranes because of the pressure against them.</u> When the fluid exerts outward pressure on the cell wall it is called turgor pressure.  Whereas, the inward pressure exerted on the cell contents by the stretched cell wall is called wall pressure. Generally, both pressures, turgor pressure and wall pressure, are counterbalanced and balanced.

So, this pressure of turgor facilitates the elongation of the cells in the plant, and also, the cells use this phenomenon to regulate the transpiration through the opening and closing of the stomach.

Thereby, the turgor of a living cell is influenced by three primary factors:

  • An adequate supply of water.
  • The formation of osmotically substances.
  • A semi-permeable membrane.

Vacuoles are organelles bounded by a single membrane and present in plant and fungal cells, and where water is stored. Plant cells control their turgor pressure through the movement of water into or out of vacuoles. When wilted plants are given water, it enters the cell generating turgor and giving a firmer appearance, and this water is stored in the vacuoles.

3 0
3 years ago
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