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Alborosie
3 years ago
14

What does finding A. fibrosa on modern-day Antarctica suggest about that continent’s past climate?

Biology
1 answer:
Fiesta28 [93]3 years ago
3 0
Must be passed from parent to offspring to have an effect on evolution of a species. give brainliest x
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Based on the reading, why is it important for all citizens to fulfill their civic duties.
worty [1.4K]

Answer:

Explanation:

Mother Theresa May once said

If every one could sweep their doorstep... the world would be a better place

if everyone could pay their taxes

If everyone could obey the law

the world would be better

just a short writing

you dont have to write the exact same thing... just hope this can give you an idea

3 0
3 years ago
The starting cell must duplicate its Chromosomes in interphase before mitosis can being? Does this change the number of chromoso
MArishka [77]

Answer:

The correct answer is both.

Explanation:

  • Each chromosome is made up of a pair of sister chromatids which remain attached to each other at the centromere.
  • During DNA replication the DNA duplicates, which means that if initially in the parent cell 'n' chromosomes were present then, after duplication, the number of chromosomes in the cell will be '2n'.
  • As mentioned above, each chromosome has a pair of sister chromatids, that is, two chromatids per chromosome. So, 'n' chromosomes will have '2n' chromatids. Hence, '2n' chromosomes will have '4n' chromatids.
  • In a parent cell,
  1. Before duplication, number of chromosome = n, number of chromatid = 2n.
  2. After duplication, number of chromosome = 2n, number of chromatid = 4n.
  • The cell cycle proceeds as, G0, G1, S, G2, M.
  • G0 represents the interphase. It occurs before replication or duplication of the chromosomes, which occurs in the S phase.
  • So, in G0 phase, the chromosome number is 'n' and chromatid number is '2n'.
4 0
3 years ago
Why is carbon important for forming complicated molecules?
navik [9.2K]
<span>it can form four covalent bonds it forms very strong bonds

</span>
5 0
3 years ago
Sex-linked traits are more common in
Maurinko [17]

Answer:

X-Chromosomes.

Explanation:

Characters determined by a gene located on only the X-chromosome are said to be sex-linked. Such traits show a different pattern of inheritance in males and females. For example, a recessive allele on the X-chromosome

• would be masked in a female if the corresponding allele on the other X-chromosome is dominant;

• would always be expressed in a male because the Y-chromosome does not have a corresponding(active) allele.

Thus, the female may posses a homozygous or heterozygous allelic pair for a sex-linked character, but a male will only have one allele for it.

8 0
3 years ago
Read 2 more answers
If the kidney cell of a bird has 64 chromosomes how many chromosones does the sperm of this bird have
ioda

Gametes, or sperm and egg cells are both haploid cells, meaning that they have half the amount of chromosomes that regular body cells do, meaning that the sperm cell of this bird would have 32 chromosomes.

4 0
3 years ago
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