In birds, sex is determined by a ZW chromosome scheme. Males are ZZ and females are ZW. A recessive lethal allele that causes death of the embryo is sometimes present on the Z chromosome in pigeons. What would be the sex ratio in the offspring of a cross between a male that is heterozygous for the lethal allele and a normal female?

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#Question id: 11544

#I Life Science/ Life Sciences Group – I-V

When a steroid hormone and a polypeptide hormone exert similar effects on a population of target cells, then ________.

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#Question id: 27872

#Research Methodology

A complete list of all the sampling units is called:

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#Question id: 22943

#SCPH28 | Zoology

FLOWERING D (FD) that is expressed in the meristem, belongs to which, transcription factor family?

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#Question id: 11266

#SCPH28 | Zoology

Which of the following options lists ecosystems in increasing order of consumption efficiency of herbivore?

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#Question id: 6972

#I Life Science/ Life Sciences Group – I-V

Sodium ions influx and passive water movement result in fluid-filled blastocoel in __________embryos.