Answer:
Crossing two chickens heterozygous for the trait feather color, when brown feathers are dominant over red feathers, will produce offspring with brown and red feathers in a brown:red phenotypic ratio of 3:1.
Explanation:
Knowing that in chickens brown feathers are the expression of the dominant allele (B) and the recessive allele is red (b), crossing two heterozygous individuals (Bb) will result in offspring that are likely to have brown or red feathers.
The cross can be represented by a Punnett Square:
<u>Bb X Bb cross
</u>
alleles B b
B BB Bb
b Bb bb
Where the result is:
<u>Genotypes</u>:
<u>Phenotypes</u>:
- Brown feathers, 75%
- Red feathers, 25%.
In this case, the probability of having brown or red feathers is 3:1.
<span>Lymph nodes are abundant organs comprising a major part of the lymphatic system, and can indeed be found throughout the body, connected by the lymphatic vessels. However, the highest concentration of clustering occurs within in the inguinal region, cervical region, and axillary region.</span>
Answer: Mitochondria
Explanation:
The Mitochondria.
The mitochondria produces energy for the cell to use by converting chemical energy from food into a form of energy in which is usable to the host cell through a process of oxidative phosphorylation
Although DNA is mainly packaged within chromosones confined in the nucleus, mitochondria also has a small quantity of unique DNA found within them called mitochondrial DNA. DNA found within the mitochondria differs from DNA found within the nucleus in the sense that it can self replicate.
