The gradual decline in men's testosterone levels in middle age can reduce their sex drive
Well there are many catastrophic scenarios that we already overcome. You should consider educating yourself about the great filter. A great filter is a hypothetical barrier that each civilization can or cannot overcome. From here on things get a little complex so I won't bore you with them. But there are experts in this theory called great filter and I'm sure they can tell you a lot about.
The patients skin laceration healed nicely leaving a cicatrix, which is a scar.
A cicatrix is the scar of a healed wound - when you have a deep wound, and it gets stitched/heals on its own, after a while, that wound is going to transform into a cicatrix, which is just a fancy medical term for a scar.
Answer:
8 different combinations of gametes can be produced by this mosquito, assuming no homologous recombination between chromosomes
Explanation:
The mosquito has 6 chromosomes. This means that means it has 3 pairs of homologous chromosomes. Basically, we can assume the number of different gametes by 2 to the power of 3 as their are 3 homologous pairs. This means 2×2×2 which will be equal to the amount of eight. Hence, eight different combination of gametes will be produced.