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Veronika [31]
3 years ago
9

If capital D = the allele for dimples, and lowercase d = the allele for NO dimples, what percentage of the offspring will show h

aving dimples, with parents having genotype Dd (capital D and lowercase d) and genotype dd (two lowercase ds)?
Biology
1 answer:
Dahasolnce [82]3 years ago
3 0
50 percent of offspring will have dimples
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It would be amazing if you can help
Tom [10]
A) planets with long orbits

*all planets in groups 1 and 2 revolve around the sun!
*planets in groups 1 and 2 have moons
*group 2 have the fastest rotations

Our solar system is divided into two sections, the first section being the inner planets consisting of Mercury, Venus, Earth, and Mars.
The second section consists of Jupiter, Saturn, Uranus, Neptune, and Pluto.

The main differences between the two sections are distance from the sun. With the exception of Pluto, All outer planets are massive in comparison to the inner planets.
7 0
3 years ago
What is the difference in structure of the antennae and antennules?
kap26 [50]
<span>The difference in structure of the antennae and antennules is their size or length. Antennae are long sensory organs while antennules are short or small sensory organs. These organs are connected to the head of an insect, crab, or other animal and they are used for taste, balance, smell, touch, air motion and vibration</span>




3 0
3 years ago
!Please help me!
yulyashka [42]

Answer is at the very end

Explanation:

Given parameters:

Mass of the asteroid = 10 x 10⁹kg

Distance between the asteroid = 850km

Unknown:

Force = ?

Solution:

We can predict the outcome of this reduction in distance between the two masses using the newton's law of universal gravitation.

The law states that "the gravitational force of attraction between two masses is directly proportional to the product of their masses and inversely proportional to the square of the distances between them".

 Mathematically, we have;

          F =

F is the gravitational force

G is the universal gravitational constant = 6.67 x 10⁻¹¹Nm²kg⁻²

m is the mass of the body

r is the distance between them.

 From this, we know that as the separation increases, the force of gravitation will reduce since the mass is constant.

The distance between the two asteroids decreased from 1000km to 850km, this will increase the force of attraction between them and we expect the force to be higher than 6700N.

 At 1000Km, force = 6700N,

 since as the distance reduces the force increases, we expect the force to be about 9200N.

Let us verify this by plugging the values into the equation:

       F =

      F = 9200N

7 0
4 years ago
Certain hazards are associated with planting, managingharvesting, and burning trees for biomass. What are two safe practices tha
Naily [24]

Hazards are associated with planting, managing, harvesting, and burning trees for biomass.

Explanation:

Biomass, an alternative for fossil fuel, is a renewable source of carbon-based energy sourced from burning plant matter, organic or food waste, and industrial waste.

Environmental hazards

Biomass production requires large scale of plants or trees to be burnt to produce energy which in turn demands more water and pesticides and causes soil erosion. When large number of trees is cut, it leads to deforestation and increase greenhouse gas which in turn leads to global warming.

The managers who practice biomass production should successfully mitigate the environmental hazards by following sustainable measures of biomass production

Operational hazards

During the operation of biomass production, a lot of risk can happen during fuel delivery, storage, handling, and during combustion operations.

  • Mechanical risk injury from mechanical conveyors, pneumatic delivery system
  • Dust explosion from finer fuel elements
  • Explosion and fire from storing and handling biomass fuel
  • Slips and falls during operations and storage.
  • Wet side and fire side risks of using boilers.

Hence, during production, storage, handling, and delivery proper stringent risk assessment must be taken regularly by the managers and necessary protection measures should be followed to avoid risks and hazards.

For example, to avoid mechanical injuries, proper care must be taken to maintain the production equipment

Proper storage rules should be maintained and checked to see if bunkers are filled only to the optimal level and not overfilled.

4 0
3 years ago
22. Explain briefly the 2 roles oxygen plays in cellular respiration
Andrej [43]

Answer:

It combine with hydrogen and two electrons form water.

It is necessary for our breathing.

Explanation:

Oxygen during cellular respiration is very important.

It combine with hydrogen and two electrons form water.

It is necessary for our breathing. cellular respiration take place effectively in the presence of oxygen and produced more ATP.

There are two types of respiration:

1. Aerobic respiration  

2. Anaerobic respiration

Anaerobic Respiration

It is the breakdown of glucose molecule in the absence of oxygen and produce small amount of energy. Alcohol or lactic acid and carbon dioxide are also produced as byproducts.  

Glucose→ lactic acid/alcohol + 2ATP + carbon dioxide

Aerobic respiration

It is the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.

Glucose + oxygen → carbon dioxide + water + 38ATP

4 0
3 years ago
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