Proterozoic era characterized by___

a) Origin of life

b) Fossils of blue green algae

c) Most invertebrate evolved

d) First gymnosperm

e) Abundance of marine algae

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#Question id: 4758

#8. Inheritance Biology

The allele l in human population is recessive lethal and x chromosome linked. If a female is heterozygous for l allele marries with normal male. What will be interpretation correct?

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#Question id: 4759

#8. Inheritance Biology

which of the following is not a mechanism for sex determination?

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#Question id: 4761

#8. Inheritance Biology

which of the following statements about a lethal allele is not correct?

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#Question id: 4762

#8. Inheritance Biology

a semilethal allele is an example of which of the following extensions of mendelian genetics?

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#Question id: 4764

#8. Inheritance Biology

Which of the following is the best example of overdominance?

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#Question id: 4768

#8. Inheritance Biology

A trait that appears to be dominant in one sex but recessive in the other is called: