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GuDViN [60]
3 years ago
9

¿Cuál organismo dio origen a todos los seres vivos que existen?

Biology
1 answer:
IrinaK [193]3 years ago
3 0

Answer:

Llegará un punto en el que te topes con el organismo original, el antepasado de todos los animales, plantas y bacterias que existen. En ese momento estarás frente a LUCA, el tátaratataratataratatara… abuelo de todos los seres vivos del planeta

Explanation:

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Huntington's disease is an autosomal dominant trait. Given the pedigree below, if individual IV-4 has three children with a norm
Bas_tet [7]

Answer:

The answer to the given question is =7/8

Explanation:

In autosomal dominant traits, one copy of the affected gene is enough to cause the disease. Let ’A’ be the affected gene, ‘a’ be the non affected gene. Since IV-4’s parents are a couple of affected and non-affected. So, he has the genes Aa, i.e. a single affected gene.  

A a

a aA aa

a aA aa

Number of children affected=\frac{1}{2}

Number child affected out of three = (\frac {1}{2}) ^{3}

At least one child affected out of three = 1-P (number of children affected out of 3 )

                                                                      = 1-(1/2)^{3}

                                                                     = \frac{7}{8}  

So, the answer to the given question is 7/8  

8 0
2 years ago
The barley plant has seven pairs of chromosomes. For a gamete, the number of genetic combinations that are possible through inde
skad [1K]

Answer:

1. 128

2. 16,384

Explanation:

Imagine there were two pairs of chromosomes:

A paired with B

C paired with D

A gamete could have the following combinations:

A + C

A + D

B + C

B + D

Therefore, with two pairs of chromosomes, there are 4 (2²) possibilities

With seven pairs of chromosomes, there are  (2⁷) possibilities. 2⁷  = 128

For a zygote produced by two barley parents, there are two gametes fused. So we must multiply the number of combinations for each gamete. Therefore, number of possible genetic combinations is 128 x 128 = 16,384

4 0
3 years ago
Why is a nutrient cycle on earth called closed system
anastassius [24]

Answer:

<em>The nutrient cycle </em><em>is nature's recycling system. All forms of recycling have feedback loops that use energy in the process of putting material resources back into use. </em><em>Recycling</em><em> in ecology is regulated to a large extent during the process of decomposition.</em><em> Ecosystems employ biodiversity</em><em> in the food webs that recycle natural materials, such as mineral nutrients, which includes water. </em><em>Recycling in natural systems</em><em> is one of the many ecosystem services that sustain and contribute to the </em><em>well-being</em><em> of human societies.</em>

<h2>Explanation:</h2>

HAVE A GOOD DAY!

I have Bolded important facts aswelll

4 0
3 years ago
How do geologists know that earths core is made up of two parts ,please answer as soon as possible that would be great :)
Gnesinka [82]
They drill holes and bring up samples of rock and study how seismic wave move through the earth.
8 0
3 years ago
If granite is subjected to high temperatures and high pressures deep within Earth, but does not melt, what type of rock will be
kodGreya [7K]
The type of rock that will be formed is METAMORPHIC ROCK.
Metamorphic rocks are pre-existing rocks that are formed as a result of physical or chemical alteration by mean of heat and pressure. The process transform the rock into a denser, more compact rock. Examples of metamorphic rocks are marble, gneiss and schist. Metamorphic rocks can be formed from already existing igneous or sedimentary rock. <span />
6 0
3 years ago
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