Which process occurs in both mitosis and meiosis?
A. crossing-over
B. replication of DNA
C. pairing of homologous chromosomes
D. division of two cells into four haploid cells
Ans: B. replication of DNA
You might also like to view...
A conservation group is deciding what land to preserve. Why might they want to consider an area of land where the ecosystem is partially damaged by a logging contract that cannot be overturned?
A. Conservation groups often focus of fixing damaged land and ecosystems. B. When conservation groups choose land to preserve, they just consider what is best for the one target species that is endangered. C. By making logging difficult, they strengthen environmentalism. D. Human activity often leads to the evolution of unique species that take advantage of the disrupted environment. Additional: Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about conservation? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
In a stratified lake, the warmer and less dense layer is called the
A) epilimnion. B) hypolimnion. C) hyperlimnion. D) thermocline.
Which is a mechanism by which chromosomal rearrangements produce proteins with altered amino acid sequence?
A) Chromosome sets from two different species are combined in one individual. B) Translocations may fuse two different open reading frames. C) Deletions may remove regulatory regions of genes. D) Inversions may move a gene from euchromatin to heterochromatin.
A sexual system where a male gorilla mates with several females, forming pair bonds with each of them, is called
A) promiscuity. B) monogamy. C) polyandry. D) polygyny.