Answer: 47 Chromosomes
Explanation: People with Down syndrome typically have three copies of chromosome 21 in each cell, for a total of 47 chromosomes per cell.
Answer:
The answer is 'D'- Their arm bones have the same structure, but not function. These are homologous structures.
Explanation:
Homologous structures are those which share a basic common structure but perform different function. The hand of a human performs functions like <em>writing, cutting, washing, chopping</em> etc. The wings of a bat are used for the purpose of <em>flying</em>.
Also, <em>a dolphin's flippers, a bird's wing, a cat's leg</em> are all <u>homologous structures</u>. The structures which are homologous have the following features:
- They share a <em>common origin</em>
- Their <em>anatomy</em> is similar
- They have a <em>similar pattern of development</em>.
So the DNA can be copied to make more of themselves.<span />
Answer:
The answer is "intragenic suppressor".
Explanation:
In this question, the second mutation on the inside of a mutated gene, that leads to both a simple restoration. Its second mutations were its instance of even a mutation suppresser because it contributed to both the evident recovery of its original phenotype from its second mutation within such a gene.
