BIOLOGY HIGH SCHOOL

Among a species of butterflies, the color blue b. is a dominant trait. Yellow color
b. is a recessive trait. If a pure blue butterfly (BB) mates with a pure yellow (bb), what will the offspring look like?

Answers

Answer 1
Answer:

Answer:

100% of the offspring are blue butterflies.

Explanation:

B is a dominant allele, determining the blue color of a butterfly.

b is a recessive allele. This means a bird with bb genotype is yellow in color.

A pure blue butterfly (BB) produces only B gametes, and a pure yellow butterfly (bb) gives onl b gametes.

Therefore, the offspring in the BB x bb cross are all blue in color.
Answer 2
Answer:

Answer:

its a

Explanation:

its all blue butterflies (:

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The main role of the axial skeleton is to help us manipulate our environment. True or false?
Following replication of its DNA, each chromosome contains two _______ which are attached to each other by a centromere.

Bacteria from the soil absorb nitrogen from the air and convert it into ammonium. This is an example of _____.the hydrologic cycle
nitrogen fixation
assimilation
carbon cycle

Answers

Answer: Nitrogen Fixation

Explanation:

The bacteria that is present in the soil converts the atmospheric nitrogen into the form that can be used by the plants.

The form of nitrogen that is present in the atmosphere is not used by the plants has to be first converted in the form which can be used by the plants.

These bacteria are found in the roots of the legumes which gets food from the roots of the plant and fixes nitrogen for the plant.

Hence, the correct answer is option B
nitrogen fixation
i hope this help

Cell division is preceded by two growth phases. Besides growth, both G1 and G2a. contain checkpoints that determine if the cycle will continue.
b. help move chromosomes to the new daughter cells.
c. produce more chromosomes before the cell divides.
d. grow and produce enough cytoplasm to fill two cells.

Answers

The answer is a. contain checkpoints that determine if the cycle will continue. Cell cycle checkpoint are important mechanisms that control cell division. There are two checkpoints during the cell cycle: G1 and G2 checkpoint. The G1 checkpoint is right before the S phase. If something is wrong at the G1 checkpoint, the cell will not enter the S phase where DNA replication starts. The G2 checkpoint (DNA damage checkpoint) is right before the M phase. If DNA is damaged, the cell will not enter the M phase (mitosis).

Why water shortages are expected to be such a widespread problem in the future.

Answers

It is true that earth is consist of 70% water. However it is still a problem that in the near future, their might be a water shortage that will happened. This is because now mostly of our water sources are no longer clean. Our water are polluted and when time will come water will be very pricey

Answer:

Water scarcity is the lack of sufficient available water resources to meet water needs within a region. It affects every continent and around 2.8 billion people around the world at least one month out of every year. More than 1.2 billion people lack access to clean drinking water.[1]

Water scarcity involves water shortage, water stress or deficits, and water crisis. The relatively new concept of water stress is difficulty in obtaining sources of freshwater for use during a period of time; it may result in further depletion and deterioration of available water resources.[2] Water shortages may be caused by climate change, such as altered weather-patterns (including droughts or floods), increased pollution, and increased human demand and overuse of water.[3] The term water crisis labels a situation where the available potable, unpolluted water within a region is less than that region's demand.[4]Two converging phenomena drive water scarcity: growing freshwater use and depletion of usable freshwater resources.[5]

Explanation:

An animal’s __________ is an immediate automatic response to an external stimulus.

Answers

It could be reflex or instinct, most likely reflex

Scientists have been experimenting with gene therapy, which often involves the use of bacteria or viruses to deliver new or modified genes to cells. These scientists believe gene therapy can be used to treat inherited diseases, but it is not yet in wide use even though many people have studied it. Which statement best describes gene therapy?

Answers

The correct answer should be something like: "Gene therapy involves the use of bacteria or viruses to deliver new or modified genes to cells". That is what can be concluded based on the paragraph you provided.

Answer:

Gene therapy is the introduction of normal genes into cells in place of missing or defective ones in order to correct genetic disorders. which often involves the use of bacteria or viruses to deliver new or modified genes to cells.

Researchers are testing several approaches to gene therapy, including:

  • Replacing a mutated gene that causes disease with a healthy copy of the gene.  
  • Inactivating, or “knocking out,” a mutated gene that is functioning improperly.  
  • Introducing a new gene into the body to help fight a disease.

What are the chemical products of cellular respiration?

Answers

The chemical products of cellular respiration are carbon dioxide, water, and ATP.

What are the chemical products?

Carbon dioxide: Carbon dioxide is a waste product that is produced when glucose is broken down. It is released into the atmosphere, where it is used by plants to make food.

Water: Water is also a waste product that is produced during cellular respiration. It is used by the cell for a variety of purposes, including transporting nutrients and waste products, and cooling the cell.

ATP: ATP is the main energy molecule of the cell. It is used to power all of the cell's activities, including movement, growth, and reproduction.

Find out more on cellular respiration here: brainly.com/question/14158795

#SPJ6

Answer:

Oxygen and glucose are both reactants in the Process of cellular respiration.

ATP is the main Product  formed in cellular respiration, and waste products include carbon dioxide and water.

Hope this helps!!
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