Answer:
47
Explanation:
We all know that gametes like egg cell and sperm have haploid set of chromosomes but here as per this question she has produced 2 copies of chromosome 21. For the sake of maintaining haploidy, she was supposed to have only a single copy of chromosome 21 as a result of which her egg cell was supposed to have 23 chromosomes not 24.
But, this is a case of non dis-junction. Also, in a normal sperm there are no such copies of any chromosome i.e. there is a haploid set of chromosomes. It means that sperm must be having only 23 chromosomes. So we can easily infer that when the egg cell and sperm will fuse, the zygote will have 47 chromosomes (24 from egg cell and 23 from sperm).
Answer:
Ectopic pregnancy can cause the burst of fallopian tube. If previous ectopic pregnancy occured then again onset of this type of pregnancy may lead to life threatening bleeding. Having the abdominal surgery before may also proved as a risk.
Answer:
I believe it's A and B
Explanation:
Hope my answer has helped you!
Answer:
The type of regulation of gene expression that would have the greatest chance of success is Posttranslational control (E).
Explanation:
The defect is found on the structure of the protein, this means that the process of formation of the protein and the codons responsible for each amino acid in the protein is in correct order, this set the transcriptional and translational process aside as being correct.
Therefore, the problem lies in the formation of secondary or tertiary structure of the protein which requires a good number of proteins also, wherein lies tha main problem in the cell membrane protein. Thus the regulation of the posttranslational process and correction of the proteins needed at this stage will give the best chance of success.
<h2>Answer:</h2>
Option C is correct.
C. Annelida and Arthropoda
<h2>Explanation:</h2>
Annelida and Arthropoda are the phyla belong to the kingdom Animalia. In these both phylum animals are consist of segmented bodies. But the animals in Annelida consists of a hydrostatic skeleton whereas the animals in Arthropoda consist of exoskeleton made up of chitin.
