<span>A mature sporophyte produces spores by meiosis, a process which reduces the number of chromosomes to half, from 2n to n. Because meiosis is a key step in the alternation of generations, it is likely that meiosis has a fundamental adaptive function. The nature of this function is still unresolved (see Meiosis), but the two main ideas are that meiosis is adaptive because it facilitates repair of DNA damages and/or that it generates genetic variation.
The haploid spores germinate and grow into a haploid gametophyte. At maturity, the gametophyte produces gametes by mitosis, which does not alter the number of chromosomes. Two gametes (originating from different organisms of the same species or from the same organism) fuse to produce a zygote, which develops into a diploid sporophyte.</span>
Answer:
12 : 3 : 1
white : yellow : green
Explanation:
Given that genes A and B control the fruit colour in following ways:
A_B_ or A_bb = white
aaB_ = yellow
aabb = green
The genes undergo independent assortment so:
AaBb X AaBb =
A_B_ : A_bb : aaB_ : aabb
9 : 3 : 3 : 1
white : white : yellow: green
12 : 3 : 1
Hence, ratio of white : yellow : green is 12: 3: 1
<h2>African Americans </h2>
Explanation:
African Americans were the people left out of the postwar boom
- African Americans and women were entitled to the same benefits as white men under the GI Bill, but often faced difficulty trying to claim their benefits due to discrimination
- Those who did manage to get benefits were often steered towards training for menial jobs
- The frustration of African American veterans barred from participating in the postwar economic boom became a major motivating factor in the Civil Rights Movement
<h2>Answer </h2>
DNA are found in the cells of all living organisms
<u>Explanation</u>
DNA is a complex molecule consisting of many components which are passed from parent organisms to their offsprings during the process of reproduction. The DNA contains instruction needed for an organism to develop survive and reproduce. DNA is deoxyribonucleic acid and is contained in your body's cells. From microscopic view they are double, large cable of particles termed as nucleotides. This show the cell what proteins to produce in the living organism. Hence, all living things have DNA within their cells.
Answer:
"Vivir saludablemente" para la mayoría de las personas significa que tanto la salud física como la mental están en equilibrio o funcionan bien juntas en una persona. En muchos casos, la salud física y mental están estrechamente relacionadas, de modo que un cambio (bueno o malo) en una afecta directamente a la otra.
Explanation:
