A polymer composed of many glucose units
Answer:
Goal of meiosis: To produce gametes with half the number of chromosomes as compared to the somatic cells.
Each parent cell produces four daughter cells by the end of meiosis.
Explanation:
The goal of meiosis is to produce gametes for sexual reproduction. Since male and female gametes fuse to produce a zygote, each of the gametes should have half the number of chromosomes as compared to the somatic cells to prevent the doubling of chromosomes by the end of each round of sexual reproduction.
Therefore, meiosis produces haploid gametes from diploid gamete mother cells. Absence of DNA replication between meiosis I and meiosis II ensures that the number of chromosomes is halved in the daughter cells of meiosis. Additionally, meiosis also imparts genetic variations to the progeny by the process of crossing over.
A diploid parent cell enters meiosis I and produces two haploid daughter cells which in turn enter meiosis II to produce a total four haploid daughter cells.
Answer:
A photon of light hits chlorophyll, causing an electron to be energized.
The free electron travels through the electron transport chain, and the energy of the electron is used to pump hydrogen ions into the thylakoid space, transferring the energy into the electrochemical gradient.
Answer: (A) Natural selection tend to reduce genetic variation as there was a smaller distribution of beak depths, but it tends to select for the most fit phenotypes, as there was an increase in average beak depth after the drought.
Explanation: The picture below shows proof if needed. On USATP
Answer:
So it is an experimental statement where scientists try predict what wwill happen
Explanation:
Example
Diffusion in teabags happen fastest in boiling water.
Because the particles gain energy abd move around more
