biology, true or false, if false what is the correct answer?

Question

seriously, these are 3 out 6 question for hw, i've been looking on the internet for hrs, and still cant find the answer. please help me.

1.)reproductive cells are also called GAMETES.
2.) homologous chromosomes pair up during the first stage of MITOSIS.
3.)a SOMATIC mutation affects sperm cells or egg cells and be inherited.


thanx^^.

Answer 1

1. true. gamete - a mature sexual reproductive cell having a single set of unpaired chromosomes
2. true. Prophase is the first stage of mitosis when chromosomes condense, the nuclear membrane disintegrates, the nucleolus disappears, centrioles (in cells that have them, e.g almost all animal cells but not plants) replicate and move to establish the poles of the cell. The spindle apparatus begins to form and some of the microtubules assist in centriole movement.

3. false. Germinal mutations are those that occur in the egg or sperm cells and therefore can be passed on to the organism's offspring. Somatic mutations are those that happen in cells other than the sex cells, and they cannot be transmitted to the next generation. This is an important distinction to keep in mind in terms of both the causes and the effects of mutation. If only the somatic cells of the organism are affected, the mutation will not appear in the next generation; on the other hand, if a germinal mutation is involved, what was once an abnormality may become so common in certain populations that it emerges as the norm.

Answer 2

1) TRUE
2)FALSE, correct answer is in mitosis first stage is chromosomes condense and become visible, the nuclear membrane breaks down, and the spindle apparatus forms at opposite poles of the cell. homologous chromosomes are in meiosis first stage.
3) FALSE because somatic mutation affects non reproductive cells

i better be right after all i am in a damn good medical university.

Answer 3

Just to clarify on question #2-

Pairing of the chromosomes only happens during meiosis. During mitosis all of the chromosomes line up into a single plane, and the sister chromatids are pulled apart.

Answer 4

1) is true. Gametes are another term for sex cells.
2)is false, homologous chromossomes only pair up in MEIOSIS (sex cells)
3) is false, somatic mutations dont occur in animals.

Answer 5

q1 TRUE
q2 TRUE
q3 FALSE (somatic are all cells EXCEPT gametes)

Richbling: Meiosis begind with a Mitosis and to split the genes equally in both new cells they pair up first.

Answer 6

a million fake (protein) 2 genuine yet quite puzzling question 3 genuine yet in addition puzzling question. What does it mens "very comparable"? each and every have very own length of this... 4 genuine 5 fake (unicellular), yet questionable. protozoans is previous college term 6 genuine 7 genuine 8 genuine yet erroneous. top answer isn't "plant" yet eco-friendly algae and cyanobacteria

Answer 7

1) is true
2) not true, should say MEIOSIS
3) not true, should say GERMLINE

Answer 8

true
true
false