Advertisements
Advertisements
Question
Explain the following terms:
Identical twins
Advertisements
Solution
Identical twins - A single fertilized egg or Zygote splits into two parts after conception, resulting in the development of two individual embryos which later develop into indentical twins.
APPEARS IN
RELATED QUESTIONS
Which of the following combinations of sex chromosomes produce a male child : XX or XY?
XO type of sex determination and XY type of sex determination are examples of ____________.
Match the items of Column I with Column II:
| Column I | Column II | ||
| i. | XX-XO method of Sex Determination | a. | Turner syndrome |
| ii. | XX-XY method of Sex Determination | b. | Female heterog ametic |
| iii. | karyotype-45 | c. | Grasshopper |
| iv. | ZW-ZZ method of Sex Determination | d. | Female homogametic |
Which of the following organisms has haploid number of chromosomes?
Which of the following is an example of genetic variation?
Select the statements that describe characteristics of genes
- genes are specific sequence of bases in a DNA molecule
- a gene does not code for proteins
- in individuals of a given species, a specific gene is located on a particular chromosome
- each chromosome has only one gene
Fill the blank circles in figure and identify the sex of child A and B.
Female heterogamy is shown by
In humans, males are heterogametic and females are homogametic. Explain. Are there any examples where males are homogametic and females heterogametic?
What is the probability of a girl or a boy being born into a family? Justify your answer.
