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प्रश्न
Also describe as to, who determines the sex of an unborn child? Mention whether temperature has a role in sex determination.
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उत्तर
As a rule the heterogametic organism determines the sex of the unborn child. In case of humans, since males are heterogametic it is the father and not the mother who decides the sex of the child. In some animals like crocodiles, lower temperature favour hatching of female offsprings and higher temperatures lead to hatching of male offsprings.
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संबंधित प्रश्न
Write the types of sex-determination mechanisms the following crosses show. Give an example of each type.
(i) Female XX with Male XO
(ii) Female ZW with Male ZZ
Does genetic combination of mother play a significant role in determining the sex of a new born baby?
The two versions of a trait (character) which are brought in by the male and female gametes are situated on :
(a) copies of the same chromosome
(b) sex chromosomes
(c) two different chromosomes
(d) any chromosomes
Name any two genetic in humans.
A family consists of two parents and their five children and the pedigree chart below shows the inheritance of the trait colour blindness in them.
Who is colour blind in the parents – the Father or the Mother?
Define the following:
Sex chromosomes
Explain the following terms:
Identical twins
With the help of a chart, explain the method of sex determination in honeybees.
Explain the mechanism of sex determination in humans with a suitable chart.
Brief about female heterogamety.
From the following which option correctly represents the normal genetic constitution of a ovum?
Sex is determined in human beings ______.
Which of the following is incorrect regarding ZW - ZZ type of sex determination?
Which of the following decides the sex of the child?
Select the incorrect statement
Some dinosaurs had feathers although they could not fly but birds have feathers that help them to fly. In the context of evolution this means that
Fill the blank circles in figure and identify the sex of child A and B.
Which of the following group shows ZW-ZZ type of sex determination?
What is sex determination? Explain the mechanism of sex determination in the case of birds.
