Answer:
The correct answer is - XDXd and XD Y
Explanation:
Sex-linked disorders are the disorders that are expressed only when there is two copy of the mutated allele or have not masked by the dominant allele of the gene. In DMD, the dominant allele is XD and the mutated allele is Xd. To express it there are the following genotype possible-
in women XdXd, and in men XdY, so these two genotypes are not possible for the parents in this case. If a mutated allele is present with the dominant allele it will be considered as carrier women but diseased will not be found in them.
So the correct genotype would be
mother: XDXd ( a carrier woman)
father : XDY (normal man)
Answer:
Option A Fruit
Explanation:
After fertilisation, the female parts of the flower develop into a fruit: the ovary wall becomes the rest of the fruit.
Answer:
Function:
mRNA: mRNA can be described serves intermediate molecule between the genetic material and the amino acids for the making of protein.
rRNA: It makes up the ribosomes along with the ribosomal proteins. Ribosomes are the sites where the process of translation occurs.
tRNA: The tRNA is involved in the bringing of the nucleotides to the ribososmes for translation.
Hey The Law of Superposition makes logical sense but in practice it is the nature of the fossils found in the sedimentary layers that determine the relative ages of the rocks. Hope it helps