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Zielflug [23.3K]
3 years ago
11

Which of the following does not accurately describes a typical human karyotype?

Biology
1 answer:
hoa [83]3 years ago
7 0
A typical human karyotype has 23 types of chromosomes arranged from largest to smallest. In males and females 22 of these chromosomes look exactly the same and they are called autosomes. The 23rd pair of chromosomes is the sex chromosome which differentiates males from females. Females have 2 copies of the x chromosome. Males have a copy of both x and y chromosome to make the 23rd pair. <span>

<span>Chromosomes can also have abnormalities that result to different conditions and identifiable traits. A most common chromosomal abnormality is the condition called Down Syndrome, where chromosome 21 has a third copy because of an abnormal cell division.</span></span>
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Prostaglandins: A. stimulate smooth muscle contraction. B. have four-membered rings and are derived from arachidonic acid. C. ar
nevsk [136]

Answer:

The correct answer is option A, that is, stimulate smooth muscle contraction.

Explanation:

A group of lipids and a hormone that plays an essential role in monitoring the process of the formation of blood clots, stimulation of labor, the flow of blood and inflammation is known as prostaglandins. The hormone prostaglandin takes part in various kinds of body functions like the relaxation and contraction of the smooth muscles at the time of childbirth, monitoring blood pressure, dilation and constriction of blood vessels, and produce inflammation at the site of infection or tissue damage.  

Prostaglandins possess five-membered rings and are obtained from the fatty acid, arachidonic acid. At the time of blood vessel injury, thromboxane, that is, a form of prostaglandin enhances the process of blood clot formation so that the injury site gets heal quickly.  

4 0
3 years ago
Quincy has type B blood.
Irina-Kira [14]

Answer:

IBi and IBIB

Explanation:

Blood group in humans is determined by a single gene with three alleles (iA, iB and i). Alleles iA and iB are both dominant over i. This means that i allele will only be expressed in a homozygous state.

In the ABO blood group system, individuals will possess the following blood types when they possess the following genotypes:

Type A- iAiA or iAi

Type B- iBiB or iBi

Type O- ii

Alleles iA and iB are codominant, this means that they both phenotypically express themselves when combined as neither is dominant or recessive to the other. Hence, in an heterozygous state;

iAiB, the blood type of the individual will be Type AB.

Following this, Quincy with a type B blood will possess an allelic combination of iBiB (homozygous) or iBi (heterozygous) in her genotype.

4 0
3 years ago
Read 2 more answers
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vichka [17]

Answer:

Photosynthesis is how plants combine light water and carbon dioxide to produce energy (glucose) and oxygen. The glucose powers the plants functions and the oxygen is releasesd back into the atmosphere. Cellular Respiration is how animals combine glucose and oxygen to produce carbon dioxide and water

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podryga [215]

Answer:

Explanation:

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4 0
2 years ago
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The Isotope carbon-14 has 6 protons and an atomic mass of 14. Carbon-14 has:
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So there are 8 neutrons.
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