Answer: b. only open economies
A closed economy is a self=sufficient economy and does not need trade activity with outside economies. There are no imports and exports.
An open economy is its opposite. It is the type of economy which interact with other economies.
<span>Trade exists in many forms like managerial exchange, technology transfers, and all kinds of goods and services. Economic advantages for citizens of a country with an open economy: 1) Consumers have larger variety of goods and services from which to choose and 2) they have the opportunity to invest their savings outside the country. </span>
Answer:
Let the "barred" allele be caller B and the "non-white" allele b. Since chickens use chromosomes 
and 
to determine sex, hens would have chromosomes 
, and roosters would have chromosomes 
. A Z-linked gene is represented as a superscript on the chromosome, 
for the dominant allele and 
for the ressesive allele.
A barred hen would have a copy of B on its Z chromosome, a non-barred rooster would have both copies of b on both Z chromosomes. Using Punnet squares to represent the crosses we get the following cases:
That is a ratio of two barred heterozygote roosters to two non-barred hens. Crossing them we get:
That is a ratio of one barred heterozygote rooster to one barred hen to one non-barred rooster to one non barred hen.
An accurate summary of meiosis is D. A CELL DIVIDES INTO GAMETES.
Meiosis is a special type of cell division wherein only have of the DNA copies are made. Meiosis divides cells two times. First cell division is Meiosis I and second cell division is Meiosis II.
In Meiosis I, homologous chromosome pairs are segregated into two new daughter cells. In Meiosis II, the two new daughter cells produced in Meiosis I are again divided producing four daughter cells.
These four daughter cells become gametes when they mature. Some types of gametes are sperm, ova, pollen, or spores. They contribute to sexual production when facilitated together with fertilization.
