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HACTEHA [7]
3 years ago
14

What process provides a vital connection between the sun and the energy needs of living systems

Biology
2 answers:
kiruha [24]3 years ago
7 0
Photosynthesis is where certain organisms store energy from the sun to run their cells' activities.
Olin [163]3 years ago
6 0
The answer is photosynthesis. <span />
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The allele for tay-sachs is a recessive allele that causes death in early childhood. The tay-sachs' prgram has enabled Tim McGra
Snezhnost [94]

Answer:

There are no chances for this couple to have a child with Tay-Sachs disease. 0% of the possibilities.

Explanation:

Tay-Sachs disease affects the nervous system and is potentially mortal. It is transmitted from parents to progeny. Tay-Sachs is caused by a defective gene in the 15 chromosome.

The child that recesives two coppies of this defective gene, one from the mother and one from the father, results sick. <u>But if only one of the parents transmits the gene, then the child will be a carrier.</u> This child won't be sick but will transmit the gene to his/her own progeny.  

<u>Available data</u>:

  • The allele for tay-sachs is a recessive allele, "t"
  • Tim McGraw to determine is a carrier, Tt
  • Tim´s wife is not a carrier, TT

<u>Cross:</u>

Parental) TT     x     Tt

Gametes) T   T      T   t

Punnet square)   T         T

                     T   TT     TT

                      t    Tt      Tt

F1) Progeny genotype: 2/4= 1/2 normal, TT

                                      2/4= 1/2 Carrier, Tt

                                       0/4= 0 Sick, tt

What are the chances they could have a child with Tay-Sachs?

There are 0% of the possibilities that this family will get a sick child.

5 0
3 years ago
Read 2 more answers
Specialized cells are __________ intocells with specific functions
aleksklad [387]

Specialized cells are stem cells that turn into cells with specific functions

3 0
3 years ago
What is a possible benefit of studying plants in the rainforest? 1) The Plants may hold medicines to treat human diseases - 2) T
elixir [45]

Answer: The plants may produce needed carbon dioxide.

Explanation:

This is the only benefit as medicine needs to be found, they won't be cut down, and they do take in toxins but it does not affect the study

5 0
2 years ago
Dna ligase is an enzyme that joins together pieces of dna. true false
Mama L [17]
This is true. DNA ligase catalyzes phosphodiester bonds. Which occur between the sugar molecules in polynucleotides. Nucleotides are the monomer to DNA, which contain a ribose sugar.. making DNA ligase able to join pieces of DNA together. 
3 0
3 years ago
Plants and animals die without air. Why? Which gases do plants and animals inhale and exhale? What are the role of these gases i
Papessa [141]

Answer:

Plants and animals both are living organisms that are directly dependent on the air. The air is comprised of various gases with definite proportions such as  78% of nitrogen, 21% of O₂, 0.9% of argon, 0.03% of CO₂, and other minor gases.

Oxygen (O₂) is the main gas that is essential for life to exist. Without this gas, no organisms can survive.

The organisms inhale oxygen (O₂) gas and exhale carbon dioxide (CO₂) gas.

These gases play an important role in the lives of plants and animals as it helps in carrying out the process of respiration. This process is essential in order to generate energy in the body of the organisms where the food particles (commonly known as sugar) are disintegrated by the cells. This is how an organism respire by inhaling O₂ gas and exhaling CO₂ gas.

8 0
3 years ago
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