Answer:
1) the genes and chromosomes do not double after each generations because parental sex cells are haploid and only contain one set of chromosomes. During fertilization the two cells fuse to form a diploid zygote with two copies of genes and chromosomes. For example a normal human has 46 chromosomes (2 copies of 23 chromosomes) during reproduction gametes which contain 23 chromosomes (haploid) fuse to form an offspring with the correct number of chromosomes ( 23 + 23 = 46).
2) offspring only receive one set of chromosomes from each parent so to maintain the chromosome number of humans. If this did not happen you would not be the same species.
P: DdCc x DdCc
g: DC Dc dC dc DC Dc dC dc
1.)
DC Dc dC dc
DC DDCC DDCc DdCC DdCc
Dc DDCc DDcc DdCc Ddcc
dC DdCC DdCc ddCC ddCc
dc DdCc Ddcc ddCc ddcc
2.)
G= 1:2:2:1:1:4:2:2:1
3.)
F= 9:3:3:1
Answer:
Ask a question
preform research
establish your hypothesis
test your hypothesis
make an observation
analyze results and draw a conclusion
present the findings
I'm not sure what you're asking, but if you're looking for a word to describe this change its "mutation"
Answer:
B. Geographic Isolation
Explanation:
Speciation is a biological process that allows the generation of new species through existing species. Through conditions imposed by the environment in which this species lives.
Speciation is usually caused by geographic isolation.
Geographic isolation occurs when a population of the same species is separated by some type of natural barrier, such as rivers or mountains. This causes the population to be divided in two and begin to face different environments and different environmental conditions. This causes each part of the population to adapt in different ways, leaving them so different from one another that it is no longer possible to say that the two populations belong to the same species.
