Down syndrome is the result of an extra chromosome 21. Which type of mutation is down syndrome

Asmall number of finches are removed randomly from the wild and placed in a protected bird area. they are given as much food as they need and have plenty of space. why would natural selection not occur in this population? a. there is no reason for genetic mutation to occur. b. the birds compete for limited resources, c. the population has not reached carrying capacity. d. there is no genetic variation in the finches.

What maintain homeostasis when a persons internal body temperature is 97.5°f

Consider the venn diagram of plant reproduction. where in this image, areas a - d, would you insert the picture of the orange lily?