Question

which of the following is true of both meiosis and mitosis?
A. both result in the formation of human cells
B. the chromosome number from the original cell changes
C. preceded by replication of genetic material
D. homologous chromosomes may stay together
will give medal and become a fan of who answers correctly

Answer 1

Depends on the wording of the problem, I'd say.

Meiosis and mitosis are both preceded by a round of DNA synthesis --> a 2n precursor cell duplicates its DNA and becomes 4n.

Whether or not the chromosome number changes depends on your interpretation of the problem. In mitosis, a 2n parent cell goes into DNA synthesis and cell division and you get two 2n daughter cells out of it.

In meiosis, a 2n parent cell goes in and you get four 1n cells out. But each of those 1n cells (gametes) will meet up with another 1n gamete in reproduction, fuse together to become 2n, and start a new organism. In your typical sexual reproductive scheme.

Answer 2

so would it be B?

Answer 3

No - because in mitosis, the chromosome number stays the same. You put one 2n (diploid) cell in, you get one 2n (diploid) cell out. Whereas in meiosis you put one 2n (diploid) cell in - and you get 4 1n (haploid) cells out. Different chromosome numbers in the latter case.

I'd go with C.

Answer 4

C is correct thank you

Answer 5

YW.

Answer 6

can you help me with a few others

Answer 7

Sure why not, don't know when I'll go to bed though. Late for me. ;0

Answer 8

what assorts independantly during meitosis?
a. genes
b. phenotypes
c. chromosomes
d.alleles

Answer 9

I'm sorry, do you mean meiosis or mitosis?

Answer 10

the first one

Answer 11

Tell your school from me that their question working -- could be better. Depending on how you look at it they all do. The chromosomes (what I think it wants) sort independently. But because the chromosomes carry genes, and the genes have different alleles, and the alleles determine different phenotypes -- they all assort independently.

Really badly worded question, imo.

Answer 12

so what do i do

Answer 13

^^ "The chromosomes (what I think it wants) sort independently."

Answer 14

TY

Answer 15

the process of showing the relative locations of a chromosomes genes is called...
a. gene linkage
b. segregation
c. the punnett square
d. gene mapping

Answer 16

The process of showing the relative locations of mountains, fields and forests is called ordinary mapping...

Answer 17

d?

Answer 18

:DDDDD

Answer 19

thomas hunt morgan observed that many genes in fruit flies tend to be inherited together. this find led to defining the principle of...
A. Incomplete dominance
b. crossing over
c. gene linkage
d. condominance

Answer 20

Which do you think it is? Or for that matter isn't - getting rid of one or two obviously not true options makes guessing much easier.

Answer 21

i think its c.

Answer 22

I think you're right.

Answer 23

thank you:)