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
Artemon [7]
3 years ago
5

The African clawed frog (Xenopus laevis) is allotetraploid, likely as a result of an interspecies mating long ago, followed by a

duplication of the entire genome. Xenopus laevis is fertile and has a normal life cycle. In contrast, mules, the allodiploid offspring of a male donkey and a female horse, are generally sterile. Why can Xenopus reproduce and mules cannot?
Biology
1 answer:
stepladder [879]3 years ago
7 0

Explanation:

Xenopus laevis is allotetraploid: it has 2 sets of homologous chromosomes originally from one species and 2 sets of homologous chromosomes originally from another species, making a total of 4 sets of chromosomes. During meiosis, every chromosome has another homologous one with which it can pair, producing viable gametes that have the complete genetic information of the species.

Mules, however, are allodiploid: they have one set of chromosomes from a donkey and another set from a horse, making a total of 2 sets of chromosmes. But those two sets are not homologous, so during meiosis the chromosomes can't pair and the gametes will have errors that make them inviable, making mules sterile

You might be interested in
When you are cold, your muscles begin to contract involuntarily and cause you to shiver. why do you think this occurs? how does
DanielleElmas [232]
Shivering occurs when the core temperature of the body begins to decrease which would threaten normal body function. Shivering is a response by the body to bring back temperature back to homeostasis. Trembling is the continual involuntary contraction of muscles. Muscle activity releases heat that warms up the body. This is the reason why we sweat during physical activities as the body sheds excess heat generated by the muscles in order to maintain the homeostatic body temperatures of 37 degrees centigrade.
5 0
3 years ago
Amino acids share a chemical backbone of?
Firlakuza [10]

Answer:

carbon, hydrogen, nitrogen and oxygen

Explanation:

mostly, combination of carboxylic and amine groups

6 0
3 years ago
At the end of _____ and cytokinesis there are four haploid cells.
Nutka1998 [239]
There are four haploid cells after meiosis and cytokinesis. There are two diploid cells after mitosis and cytokinesis. It's easy to get confused. :D
5 0
3 years ago
The overgrowth of algae poses a major problem for coral reefs. fish eat algae. why would intensive fishing contribute to the ove
pychu [463]
In the open ocean, especially around the surface, one of the main sources of food for fish would be the algae that grow at the surface & photosynthesize with the sun. Without fish to regulate the amount of surface algae, they overgrow and block the sun from the organisms on the coral reef.

Without sun, the reef is not able to sustain themselves & it's down hill from there.

I hope this helps!
8 0
3 years ago
Fungi:_____​
koban [17]
The only part of the two answers that is correct it the second part of answer A) which says “Release enzymes that digest cells.”
The other answers are not correct because...
*Fungi CAN be single and multicellular organisms.
*Fungi doesn’t have chlorophyll there for it doesn’t have the ability to do photosynthesis.
*Fungi does have the ability to attach to hairy areas.
8 0
3 years ago
Other questions:
  • Which best describes the geologic time scale?
    8·2 answers
  • How many full-length strands of hair are collected from the scalp to use as a sample?
    8·2 answers
  • Han takes a shower in his family’s new apartment. He gets the water perfect—not too hot, because that hurts! Then Han hears his
    14·1 answer
  • Experiments to determine if a specimen is living or not
    13·1 answer
  • When washing the dishes, you most likely used an animal from the
    12·2 answers
  • Which tectonic plate boundary caused the structure that is circled in the image?
    14·1 answer
  • 12. What is the energy released from respiration?
    10·1 answer
  • IS THIS CORRECT?? IF NOT WHATS THE ANSWER PLEASE
    14·2 answers
  • Certain species of velvet worms have only female individuals and no males. These worms reproduce asexually. What is one advantag
    6·1 answer
  • After the movie is over, Illana's heart rate starts to go back down, and the hairs on the back of her neck return to normal as s
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!