If the expression of a trait requires only one copy of a gene (one allele), that trait is considered dominant. If the expression of a trait requires 2 copies of a gene (2 alleles), that trait is considered recessive. One exception is X-linked disorders.
Answer:
Aa
Explanation:
In Punnett Square, you are bringing the letters on the top to the numbered squares, if that makes sense. It is to predict the genotype of offspring.
So square 1, on the left is A, and on the top is A, so it would be AA.
For square 2, on the left is a, and on the top is A, so it would be Aa.
For square 3, on the left is A, and on the top is A, so it is AA.
Square 4, your question, has a on the left, and A on the top, so it is Aa.
Hope it makes sense. You should probably watch a Punnett Square tutorial online or something for a full and more general explanation.
Answer:
The statement that best describes the benefit of studying biology is the ability to intelligently debate issues such as cloning.
Explanation:
Biology encompasses the study of all known forms of life, including their anatomy, organization, functioning and interactions.
One of the advantages of the knowledge acquired through biology is to be able to participate in works and discussions involving subjects related to living beings, including cloning.
The other options are not correct because:
<em> a and c. The </em><u><em>ability to experiment on animals or preserve animals that are extinct</em></u><em> is reserved for scientists with a deep knowledge of biology and its fields.
</em>
<em> d. Understanding the </em><u><em>causes of wheather change</em></u><em> does not correspond to knowledge in biology</em>
Answer:
2. What must be done to carbon dioxide gas to change it to a solid?.
Carbon dioxide is a gas by using a metal to solidify it
3. Which is colder, dry ice or carbon dioxide gas?
Carbondioxide gas
If dry ice is placed in water, we see bubbles rise.
4. These bubbles are made of
gaseous substance in the gaseous state.
5. What happens to the size of the dry ice as the bubbling goes on?
the size of the dry ice reduces as a result of conversion of solid to liquid form
Explanation: