1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
r-ruslan [8.4K]
3 years ago
10

What step of development does an egg and sperm meet

Biology
1 answer:
Tamiku [17]3 years ago
8 0

"The Sperm's Long Journey. A man may ejaculate 40 million to 150 million sperm, which start swimming upstream toward the fallopian tubes on their mission to fertilize an egg. Fast-swimming sperm can reach the egg in a half an hour, while others may take days. The sperm can live up to 48-72 hours."

You might be interested in
Along what types of tectonic plate boundaries <br> are volcanoes generally found? Why?
Gnesinka [82]

Answer:

Divergent plate boundaries because the separating of the tectonic plates allows for the lava to push its way through the rift and escape to Earth's surface.

8 0
3 years ago
One of the traits that we looked at in class was a widow's peak (has peak is dominant, no peak is recessive). For each individua
Marina CMI [18]

Answer:

Explanation: 1) Individual who is bald but neither parents has a widow's peak: As having a peak is dominant and the individual is bald with parents that doesn't have the trait, the genotype is recessive, in the case ww;

2) Individual has a widow's peak: The individual's genotype can be WW, homozygous for the trait or Ww, heterozygous for the trait, depending on the genotype of the parents;

3) Individual can't roll their tongue: Being able to roll the tongue is a dominant characteristics, so if the individual can't roll their tongue means the genotype is recessive. But, there is little evidence that this trait is dominant or inheritable;

4) Individual has a widow's peak  but their mother does not: In this case, the genotype of the individual is heterozygous (Ww), because the mother is recessive (ww) and the offspring has the trait, so the father must have had it;

5) If an individual does not have a widow's peak (ww), which genotype would be impossible? If this individual crosses over with another individual with the same trait, their children will be all recessive for widow's peak (ww), so there is no possibility of an offspring with the trait;

If the initial individual crosses over with an individual with widow's peak, two possiblities can occur:

  • If the crossover is with an individual homozygous for the trait (WW): all their children will have widow's peak with genotype Ww. So, the possibility of not having the peak is 0;
  • If the crossover is with an individual heterozygous for the trait (Ww), there will be a probability of 25% for the children to have genotype WW, a probability of 50% for the offspring to be heterozygous (Ww) and has the trait and probability of 25% to be recessive (ww) and therefore doesn't have the trait;

8 0
3 years ago
Why can’t pregnant women eat swordfish?
mrs_skeptik [129]
Um..... because it could have high levels of mercury, an mercury consumed during pregnancy has been linked to developmental delays and brain damage
8 0
3 years ago
Find the product of 1304\ \times \ 51304 × 5.
tia_tia [17]

Answer:

256520

.........hope this helps!!!.............

8 0
3 years ago
What are some ways to prevent wind erosion in a dry, sandy area
Kitty [74]
Preventing wind erosion in a dry, sandy area is feasible through any of the following land-use practices:

a. Tillage - creates soil roughness by making furrows and ridges that are perpendicular to the direction of the wind. 
b. Crop rotation - rotations of legumes followed by shrubs followed by trees then back to legumes work best.
c. Intercropping - is the most widely used particularly in countries with desert areas. One of the most popularly used is oasis agriculture that makes use of about 3 layers of vegetation. 


7 0
3 years ago
Other questions:
  • the earth is the 3rd planet from the sun. it receives just the right amount of heat from the sun, which contributes to the plane
    10·1 answer
  • Which of the following elements can be found in all lipids? A)Oxygen B)Sulfur C)carbon D)Hydrogen E)Nitrogen
    8·2 answers
  • which of the following best explains why clear cutting forests is more destructive than selectivly cutting down trees in crests
    8·1 answer
  • Describe the effect on death rate of having only nurses working in ward b and not doctors
    5·1 answer
  • Convection in the upper mantle
    7·2 answers
  • What mass of water in grams will fill a fish tank 100 cm long, 50 cm wide, and 30 cm high?
    14·1 answer
  • Click to fix any plural or possessive errors below. If there is no error, just click
    8·1 answer
  • Prokaryotic organisms have a single origin of replication. True or False
    9·1 answer
  • Assuming that the motion of the object remains the same, at what position will the object be when it had traveled for a total of
    13·2 answers
  • Streptococcus mutans is one of the bacteria responsible for dental plaque formation and lacks an outer membrane outside its cell
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!