The allele combination that could occur in the zygote is Rr.
<u>Explanation:</u>
A diploid parent contributes one allele of a gene to the gamete. Thus the gametes in human reproduction will be haploid so as to maintain the diploid nature of the zygote. In the given question both parents are homozygous and the inheritance follows Mendel’s laws.
The dominant allele is represented by the letter R and the recessive allele is represented by the letter r. One parent is homozygous dominant which means both the alleles in that parent is dominant and the genotype will be RR. The other parent is homozygous recessive with the genotype rr.
The cross can be represented as
Rr Rr Rr Rr
All the progenies will have the genotype Rr and will be dominant and possess the ability to roll the tongue.
Since the radiation has no mass .It is Gamma radiation.
Step by Step Explanation:
Characteristics of Gamma radiation are as follows:
- Gamma radiations are chargeless.
- It is Electromagnetic wave having a very short wavelength.
- It is not effected by the electric or magnetic field.
- It has velocity equal to light in vaccum .
- It has a very high intensity and can penetrate long distances.
- It has a very low ionizing power. i.e. it does not ionize the medium in whic it travels.
Gamma radiation has proved itself to be very useful in radioactive treatment of cancer due to its high penetrating power.
Answer:
B It occurs in animal cells, but not in plant cells. this is the answer
hope it helps :)
I don't know if this question is missing some multiple choice options that go along with it, but...
One plate will subduct (go under the other plate), creating a trench or subduction zone. The other plate goes over the subducted plate, creating raised ground. This is how mountains and volcanoes are made.
Rough and smooth endoplasmic reticulum
