What is the genotype of the male fruit fly?
The sex of the fruit fly Drosophila melanogaster is determined as follows: XX chromosomes give a female and XY give a male. The gene for bar eyes is recessive and located on the X chromosome. A male has a genotype RrTt.
Which trait is most likely determined by genes?
The correct answer is 2 – “Traits are influenced by both genes and the environment”.
- A dominant trait is most likely to occur.
- Traits are influenced by both genes and the environment.
- Genes determine all traits.
What genes are inherited from parents?
You got all your genes from your parents. For each pair of their chromosomes, you get one chromosome from your mother and one from your father. When the egg and sperm cells come together, they create the full set of 46 chromosomes or 23 pairs.
Are vestigial wings dominant in fruit flies?
In fruit flies, the dominant V allele produces long wings, whereas the recessive v allele produces vestigial wings. Thus, flies with the genotype VV or Vv will have long wings, and flies with the genotype vv will have vestigial wings.
Is wild type dominant in fruit flies?
In Drosophila, the most common form is called the ‘wild type’. A mutant can be either dominant or recessive to the wild type. If the mutant is recessive to the wild type, its name is given in lower-case, but if it is dominant, it is given in upper case.
Is wild type always dominant?
There are only ever two alleles for one character. The wild type allele is always dominant.
What is a mutant trait?
Most populations are polymorphic for most phenotypic traits, from fur color to blood type. The allele that encodes the phenotype most common in a particular natural population is known as the wild type allele. Any form of that allele other than the wild type is known as a mutant form of that allele. …
Does wild type mean homozygous dominant?
homozygous Having two identical alleles for a particular trait. heterozygous Having two different alleles for a particular trait. dominant allele In a heterozygous condition, the allele that is expressed. Wild type is designated with a “+” for any allele.
What is a wild type fruit fly?
In fruit fly genetics, the normal fly is called a “wild type” and any fly exhibiting a phenotypic mutation is called a “mutant”. Mutant flies are given names that generally denote the type of mutation the fly exhibits. For example, the mutant “ebony” has a much darker body than the wild type fly.
Are fruit flies harmful?
So, Are Fruit Flies Harmful? Quick answer: yes and no. Fruit flies can be dangerous to humans, but not in the form of a bite (aka, no, they can’t “bite” you, like a mosquito or horse fly might bite you) but they can do other nasty stuff…
How long do fruit flies live?
30 days
Are all flies female?
Fly genders mirror those of more advanced species. When they mate, the males introduce sperm into female bodies, and females develop and lay eggs to create the next generation of flies.
Why do female fruit flies have to be virgins?
Because female flies store sperm from previous matings before the eggs are fertilized, we only select virgin female flies for matings in order to ensure that every egg laid has the correct genotype.
Why are female fruit flies bigger?
Look at how long the fly is. The female fruit fly is longer than a male of the same species. Their abdomens are longer, but not any other body part. This makes females appear a bit larger than their male counterparts.
Are female flies bigger?
1. Look at the size of the fly. This is the first and most basic step towards distinguishing the gender of your Drosophila. Female flies tend to be much larger than male flies. If you look at the cartoon above, you can see that the female is about 25% larger than the male.
How do you rid of fruit flies?
Here are seven things you can do to help get rid of these pests.
- Find the source.
- Clean common areas.
- Use the rotten fruit against them.
- Make a swimming pool trap.
- Mix a vinegar solution.
- Try a store-bought trap.
- Hire an exterminator.
- Can a fruit fly infestation affect my health?
Can flies be pregnant?
The female fly can lay several batches of up to 150 fertilized eggs at a time during her life, beginning 3 to 4 days after copulation if temperatures are warm enough. The female lays her eggs in manure or other decaying, moist, organic matter. One female fly can lay up to 1,000 eggs during her lifetime.
Can you see fly poop?
Houseflies follow their “noses” to a likely food source (almost anything). In pretty short order, the food is metabolized, and they poop out the rest in what we usually call “fly specks.” Fly poop is tiny black or brown dots. You might also find amber-colored spots, but that’s excess SFS left over from the meal.
Do I have to tell airline Im pregnant?
After week 28 of pregnancy, the airline may ask for a letter from your doctor or midwife confirming your due date, and that you aren’t at risk of complications. Long-distance travel (longer than 4 hours) carries a small risk of blood clots (deep vein thrombosis (DVT)).
Can flies breed in your house?
House flies rarely breed indoors, but may enter through open windows or doors. House flies breed in decaying organic matter such as livestock feces and garbage. They are active on warm days year around but reproduce most quickly in the summer.
Why are there suddenly so many flies in my house?
How to get rid of house flies. The most common reason for flies swarming all over your house is an infestation inside or nearby your home. If you suddenly see a swarm of flies that means dozens of eggs have already hatched and developed into flies. The source is likely inside your house, garage, attic or garden.
How do I find out where flies are coming from?
Inspecting For House Flies Most of the time, when you find house flies inside, it is because they are coming inside the structures. Check cracks around windows, doors and vents as possible entry points. It is crucial to find out where the breeding sources are located and how they are entering the buildings.
Where do flies lay eggs inside house?
House Flies Homeowners typically find house fly eggs in moist, decaying organic material like trash, grass clippings, or feces. Elongated and pale in color, they appear in clusters and hatch quickly after being laid by the female fly.
What are flies a sign of?
Flies are seen as harbingers of disaster, heralds of death. Seeing a swarm of flies might mean the need to kill the harmful irritations in life. The biblical meaning of flies swarming around you may also symbolize dullness in your life. No movement, no development in your life; it is similar to death.
Why do flies rub their hands?
Rubbing Behavior Flies rub their limbs together to clean them. It gets rid of physical and chemical detritus and clears up their smell receptors — all of which is important for flying, finding food, courting mates and just about everything that a fly does.
How long does a fly infestation last?
House flies and other larger flies that usually infest a house can live for days, maybe even months. Mayflies, however, usually only have a 24 hour lifespan. Flies can contaminate food and cause other problems.
How do I get rid of flies ASAP?
Vinegar and dish soap fly trap
- Use a shallow dish bowl and fill it with an inch of apple cider vinegar and a tablespoon of sugar.
- Next, add some fruit-scented dish soap.
- You can leave the dish uncovered or tightly covered with plastic wrap. Make sure to poke a few holes in it to attract the flies.
Do flies lay eggs every time they land?
Despite all of the bacteria and potential infections lying in our food, we do have to be thankful for one thing — at least they’re not laying any eggs when they land.
How do I know if I have a fly infestation?
If you spot maggots in your home, it’s a sure sign of a fly infestation. Female flies look for moist, dark areas in which to lay their eggs. They’ll lay them in trash, rotting food and manure. When flies invade your home, they may lay eggs in leftover food on the counter or on feces in the litter box.