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प्रश्न
XO type of sex determination and XY type of sex determination are examples of ____________.
पर्याय
Male heterogamety
Female heterogamety
Male homogamety
Both Female heterogamety and Male homogamety
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उत्तर
XO type of sex determination and XY type of sex determination are examples of Male heterogamety.
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
Differentiate between male and female heterogamety.
Fill in the following blank with suitable word :
Genes always work in ................ .
________ shows haplo-diploid type of sex-determination.
Differentiate Intersexes from Supersexes.
How many ovum are formed when a diploid cell undergoes meiosis, during oogenesis?
A zygote which has an X-chromosome inherited from the father will develop into a
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
All human chromosomes ate not paired. Most human chromosomes have a maternal and a paternal copy, and we have 22 such pairs. But one pair called the sex chromosomes, is odd in not always being a perfect pair. Women have a perfect pair of sex chromosomes. But men have a mismatched pair in which one is normal sized while the other is a short one.
(a) In humans, how many chromosomes are present in a Zygote and in each gamete?
(b) A few reptiles rely entirely on environmental cues for sex determination. Comment.
(c) "The sex of a child is a matter of chance and none of the parents are considered to be responsible for it." Justify it through flow chart only.
OR
(c) Why do all the gametes formed in human females have an X chromosome?
The sex chromosome in a human ovum is ______.
