Phenotypes are the physical characteristics that result from the genotype, which is the genetic makeup of the organism. In this case, either straight hairline or Widow's peak will be the phenotype, as they are the physical characteristics being discussed.
The questions states that a Widow's peak is dominant over straight hairline. So we are going to assume that the Widow's peak allele is W (dominant), and the straight hairline allele is w (recessive).
A dominant allele will mask the presence of a recessive allele unless both of the alleles are both recessive (both ww).
So for the WW genotype, we are going to see the dominant phenotype: Widow's peak.
For the Ww genotype, we are also going to see the dominant phenotype since the dominant allele is going to mask the presence of the recessive allele, so we are going to see: Widow's peak.
Lastly, for the ww genotype, we are going to now see the recessive phenotype, since both alleles are recessive: straight hairline. Note that their are two of these type of offspring as stated in the question.
Answer:
The spinal cord starts at the bottom of the brain system and ends on the lower back as it tapers to form a cone called the conus medullaris.
Explanation:
The bold part is what you need to know!
The answer is D. An anion is a negatively charged ion, which means it has accepted an extra electron (s) from a donor ion (cation). To add an electron, energy has to be released so that the electron can be less excited and go back to its orbital level. The released energy is equivalent to the energy required to remove the electron from its orbital level.
Explanation:
In the given question,
suppose allele A and a determines the color of the fruit whereas allele B and b determines the shape of the fruit.
The genotype for white, disc shape fruits is- AABB
the genotype for yellow, long fruits is- aabb
F1 progeny will be- AABB x aabb
AaBb
F2 cross- AaBb x AaBb
AB Ab aB ab
AB <em>AABB AABb AaBB AaBb</em>
Ab <em>AABb AAbb AaBb Aabb</em>
aB <em> AaBB AaBb aaBB aaBb</em>
ab <em>AaBb Aabb aaBb aabb</em>
The genotype of F2 cross are-
1. 9/16 A- B- disc-shaped (like F1)
2. 3/16 A- bb spherical
3. 3/16 aa B- spherical
4. 1/16 aa bb long.
Answer:
No, they don't always look like the parents.
Explanation:
They won't always look like the parents because from each parent, they will receive different dominant and recessive traits. In addition, certain traits skip generations or don't get passed down. For example, you can have 2 parents with red hair and have dark brown hair, but have a child who DOES have red hair.
