Fraternal twins:
Correct answer: D. Can be one boy and one girl
- A. Can be only two boys
- B. Can be only two girls
- C. Cannot be one boy and one girl
- D. Can be one boy and one girl
Explanation
In some cases, more than one egg is produced by the female, and all these eggs are independently fertilized forming two or more zygotes. These zygotes develop into new offspring, but with different genetic combinations. Such twins or triplets are called fraternal twins or triplets. They are produced sexually. As this process is not affected by type of chromosome, the two zygotes can give rise to same or opposite genders.
Report an error
The more specific you are, the faster it gets fixed. A source beats an opinion.
Prefer email? [email protected]
About Reproduction
Human reproduction covers the male and female reproductive organs, gamete formation, fertilization, implantation and hormonal regulation. The menstrual cycle includes ovarian and uterine changes controlled by pituitary and ovarian hormones, while sexually transmitted diseases are studied through their causes, transmission, symptoms, prevention and effects on fertility.
Practise Reproduction
1,220 free Reproduction MCQs from Biology, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Discussion
Stuck on an option, or know a faster way to get there? Ask or explain it here.
No comments yet. Be the first to explain this one.
Exams that ask Biology questions like this
Biology is on 8 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
More Reproduction questions
The technique of producing a genetically identical copy of an organism by replacing the nucleus of an unfertilized ovum with the nucleus of a body cell from the organism is:
Reproduction of egg without fertilization by sperm is termed as:
A form of asexual reproduction in which new individual grows out as a small out growth and eventually separates from parent body is called:
Sexual reproduction is important to avoid:
Which of the following cell type is haploid?
Spermatogenesis and oogenesis both involve: