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
bulgar [2K]
3 years ago
5

A woman produces an egg with 24 chromosomes, including 2 copies of chromosome 21. If the egg is fertilized by a normal sperm, th

e zygote will have _____ chromosomes.
Biology
1 answer:
Zielflug [23.3K]3 years ago
6 0

Answer:

47

Explanation:

We all know that gametes like egg cell and sperm have haploid set of chromosomes but here as per this question she has produced 2 copies of chromosome 21. For the sake of maintaining haploidy, she was supposed to have only a single copy of chromosome 21 as a result of which her egg cell was supposed to have 23 chromosomes not 24.

But, this is a case of non dis-junction. Also, in a normal sperm there are no such copies of any chromosome i.e. there is a haploid set of chromosomes. It means that sperm must be having only 23 chromosomes. So we can easily infer that when the egg cell and sperm will fuse, the zygote will have 47 chromosomes (24 from egg cell and 23 from sperm).  

You might be interested in
Can recessive genes be expressed if the gene pair is heterozygous and why?​
disa [49]

Answer:

Recessive alleles are denoted by a lowercase letter (a versus A). Only individuals with an aa genotype will express a recessive trait; therefore, offspring must receive one recessive allele from each parent to exhibit a recessive trait.

Explanation: Is this what you were looking for?

3 0
3 years ago
Read 2 more answers
Why do all models have limitations
Harlamova29_29 [7]

Answer: All models have limitations because they are not representative of every possible scenario. They use current knowledge and scientific data, but as those are subject to change, the models based off that knowledge and data are subject to change as well.

Explanation: Brainliest please, if I helped you! :)

5 0
3 years ago
Read 2 more answers
Which statement best describes the composition and function of proteins in organisms? A)long chains of hydrocarbons used for dig
son4ous [18]

D) Long chains of amino acids used for building, repair, and maintenance


Proteins are made up of amino acids, and they are used to create substances (like hair, nails, etc.)


Hope this helps!!

8 0
3 years ago
What are the genotypes of hemophilia?
Veseljchak [2.6K]
His genotypes are X to the power of H and X to the power of h the second numbers are exponents so it goes X to H and X to h i hope this makes sense i couldn't make them into exponents but i tried :)

6 0
3 years ago
How are the particles in this picture below organized?
Katarina [22]

Answer:

Solid, liquid, Gas

Explanation:

Yeet

8 0
3 years ago
Read 2 more answers
Other questions:
  • Biochemical changes in the body, that affect the rate of metabolism and elimination of a substance from the body and produce inc
    12·1 answer
  • In an ocean ecosystem, which is necessary to begin a food web?
    10·2 answers
  • what is a light year? Explain why light-years are used to measure distances and sizes in the universe
    11·1 answer
  • The buildup of charges on an object is called
    9·1 answer
  • Write a summary of the role of RNA and how RNA is synthesized
    10·1 answer
  • ______________ are the product of the use of biotechnology.
    10·1 answer
  • What term is used to describe the clear-cutting of rain forests for their valuable lumber, which often results in species loss?
    7·1 answer
  • Human being, grass, tiger contract the food chain​
    11·2 answers
  • Name two strengthening/support tissues. Explain your answer
    14·1 answer
  • Which of the following is an example of a nucleic acid?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!