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N76 [4]
4 years ago
7

Choose the answer that best describes a gene.

Biology
1 answer:
nasty-shy [4]4 years ago
7 0
I think the correct answer from the choices listed above is option B. A gene is a tightly coiled strands of DNA. A gene is the basic unit of heredity and is made up of DNA. It acts as instructions to make molecules. Hope this answers the question.
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In cats, being awesome (A) is dominant to being average (a), and being bashful (B) is dominant to being
BlackZzzverrR [31]

Answer:

Probability that both cats described will have an offspring who is heterozygous for both traits is 50%, according to the scenario given.

Explanation:

When a cat amazing and bashful is crossed with a cat average and boring, it is a crossing where two traits are taken into account that will be segregated independently by the parents, and the result can be obtained by analyzing their genotypes and making the corresponding crossing in a Punnett square.

<u>Genotypes</u>:

  • <u>Male cat</u>  AABb
  • <u>Female cat </u> aabb

<u>Crossing</u> :

Punnett's square (simplified)

<em>Alelles       AB      Ab</em>

<em>ab            AaBb  Aabb</em>

<em>ab            AaBb  Aabb</em>

<u>Offspring</u>:

  • <em>AaBb amazing and bashful (heterozygous for two traits) 50%</em>
  • <em>Aabb amazing and boring (heterozygous for trait A ans homozygous recessive for B) 50%</em>

<u><em>Probability that they will have an offspring who is heterozygous for both traits is 50%.</em></u>

8 0
3 years ago
What type of molecule speeds up chemical reactions in living things?
iren [92.7K]

The best answer is  B - Proteins.

Proteins make up enzymes, or to put it another way enzymes are made up of protein. It is enzymes that speed up the chemical reactions. Enzymes are organic catalysts, substances that speed up a (biochemical) reaction but do not take part in the reaction and remain unchanged at the end of the reaction.

In man, there are many enzymes. The majority of these are found in the digestive system where they greatly aid the process of food breakdown from complex molecules to simple molecules. Examples include salivary amylase found in saliva,  which begins the gradual breaking down of starch into glucose right from the moment food is placed in the mouth and mixed with saliva. Pepsin in the stomach breaks down protein.

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7 1
4 years ago
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Which of these is formed when a potassium ion is attracted to a chloride ion?
hoa [83]

Answer:

OD.

Explanation:

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3 0
3 years ago
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What kinds of matter are likely found in this system?
vladimir2022 [97]

Answer:

Even though matter can be found all over the Universe, you will only find it in a few forms  Scientists will probably discover more states of matter as we continue to  It's a fun state of matter when you remove almost all energy from a system.

Explanation:

6 0
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