Answer:
Explanation:
<em>Let the ability to break down the red color in beets be represented by the allele </em><em>B</em><em>. The inability would be represented by the allele </em><em>b</em><em>.</em>
A nonsecretor's genotype would be BB or Bb while a secretor's genotype would be bb.
A nonsecretor woman with a secretor father would be a carrier with genotype Bb. A nonsecretor man who in a previous marriage had a secretor daughter would also be a carrier with genotype Bb. If the two marries:
<em>Bb x Bb</em>
<em> BB 2Bb bb</em>
1.
(a) probability of their first child will be a secretor girl = probability of having a girl and being a secretor.
Probability of having a girl = 1/2
Probability of being a secretor = 1/4
<em>probability of their first child will be a secretor girl</em> = 1/2 x 1/4 = 1/8
(b) Probability of their first child being a nonsecretor girl = probability of having a girl and being a nonsecretor.
Probability of having a girl = 1/2
Probability of being a nonsecretor = 3/4
<em>Probability of their first child being a nonsecretor girl = probability of having a girl and being a nonsecretor</em> = 1/2 x 3/4 = 3/8
2. <em>Probability that their first two children will be nonsecretors of either sex = probability of their first being a nonsecretor and of either sex and probability of their second being a nonsecretor and of either sex.</em>
= 3/4 x 3/4 = 9/16
The one challenge for biology right now is:
Biologists are always seeking better tools for imaging the body and the
brain. Many mysteries remain in the catalog of human genes involving exactly how genes work in processes of activation and inhibition.
Answer:
Picture 1, 3,7 and 11 indicates the structure of molecules while the other are substances.
Explanation:
Picture 1, 3,7 and 11 indicates the structure of molecules while all the other picture indicates the substances. molecules refers to the two or more atoms of the same element or different element that are bound together with the help of bonding. All the substances are made of very small structure called atoms and molecules. In the picture having round structure represents the structure of molecules.
