for one and c are closer alike to each other as the rates of recombination depend on the likeness of that gene
Answer:
The correct answer is - 3/16 or 18.75% portion will be resistant to both Bt and DDT.
Explanation:
It is given that bollworms that are susceptible to Bt are represented by either RR or Rr and resistance one are shown by rr genotype and bollworms that are resistant to DDT are represent TT or Tt genotype and susceptible to DDT have tt genotype.
Cross: RR tt with rr TT
Gametes: Rt and rT
F1 cross:
RT
rT RrTt ( susceptible Bt and resistant DDT)
F1 Cross with F1
Gametes: RT, Rt, rT and rt
cross:
RT Rt rT rt
RT RRTT RRTt RrTT RrTt
Rt RRTt RRtt RrTt RrTt
rT RrTT RrTt rrTt rrTt
rt RrTt Rrtt rrTt rrtt
The bold genotypes are the three out of 16 that are resistant to both DDT and Bt.
Answer;
Ovaries, Fallopian tubes
An ovum bursts from one of a woman's Ovaries & is drawn into one of the two Fallopian tubes.
Explanation;
-Follicles develop inside - and eventually rupture, being released outside - the ovaries. It is soon swept into the nearest Fallopian tube by the finger-like projections that form the end of the tube, where it will hopefully be fertilized. At ovulation, the follicle ruptures and the egg breaks through the surface of the ovary.
-Sperm can penetrate the egg beginning embryonic development, if it successfully implants in the uterus you will have a pregnancy.
Answer:
a birds wing is made of cartilage and bones, bugs wings are made of their exoskeletons. bugs wings are called chitin
<span>The answer is molecular clocks.
Molecular clocks use rates of mutation to measure evolutionary time. This technique is based on the fact that mutations add up at a fairly constant rate in the DNA of species that evolved from a common ancestor. The more mutations that happened in each lineage, the greater is the differences between these lineages and vice versa.</span>
