Answer:
a. 81/256.
b. 9/256.
b. 9 / 256.
Explanation:
The given traits in the question follow the Mendelian character. The cross between the body color where B is responsible for black color and b is responsible for brown color is as follows: Bb × Bb results in the 3/4 black color ( BB, Bb, Bb) and 1/4 brown color progeny (bb). The cross between the poisonous and nonpoisonous trait where D is responsible for poisonous trait and d is responsible for nonpoisonous is as follows: Dd × Dd results in the 3/4 poisonous trait (DD, Dd, Dd) and 1/4 nonpoisonous (dd). The cross between the eye color where E is responsible for black color and e is responsible for red color is as follows: Ee × Ee results in the 3/4 black color ( EE, Ee, Ee) and 1/4 red color progeny (ee). The cross between the hair trait where H is responsible for hairy and h is responsible for hairless is as follows: Hh × Hh results in the 3/4 hairy (HH, Hh, Hh) and 1/4 hairless (hh).
a. The cross between BbDdEeHh spider with a BbDdEeHh spider results in the 3/4black body, 3/4 black eyes, 3/4, hairy, and 3/4 poisonous progeny. Their probability is 3/4× 3/4× 3/4× 3/4 = 81/ 256.
b. The cross between BbDdEeHh spider with a BbDdEeHh spider results in the 3/4black body, 3/4 black eyes 1/4 hairless, and 1/4 nonpoisonous progeny. Their probability is 3/4× 3/4×1/4 3/4×1/4 = 9/256.
Thus, the answer is a. 81/256.
<span>A retrovirus is anything of a group of RNA viruses that insert a DNA copy of their genome into the host cell to replicate.
your welcome
</span>
Children of CF carriers can inherit their copy of the CFTR gene mutation. There is a 25% (1 in 4) probability that a child born to two CF carriers will have the disease.
<h3>What causes cystic fibrosis primarily?</h3>
- Cystic fibrosis is brought on by a mutation in the CFTR gene (cystic fibrosis transmembrane conductance regulator).
- This gene regulates the movement of fluids and salt into and out of your cells.
- When the CFTR gene isn't functioning properly, your body produces a buildup of sticky mucus.
<h3>Cystic fibrosis usually results in death.</h3>
- When cystic fibrosis causes a severe illness or the lungs stop functioning properly, it can be fatal.
- It also has a tendency to get worse over time. However, because to improvements in medicine, patients with cystic fibrosis are now living longer.
- Approximately half of those who have cystic fibrosis will live past the age of 40 at this time.
learn more about crystic fibrosis here
brainly.com/question/25129734
#SPJ4