Certain mutations can disrupt the formation of the acrosome in mammalian sperm. Which of the following would be the MOST direct consequence of such a mutation?
Inability to penetrate the zona pellucida
Reduced sperm motility
Failure of the sperm to undergo capacitation
Premature release of acrosomal enzymes
Related Questions
A plant species has separate male and female flowers on different individuals. This plant species can be described as:
Monoecious
Dioecious
Hermaphrodite
Bisexual
Which of the following flowers only once in its life-time ?
Papaya
Bamboo species
Mango
Jackfruit
During embryogenesis the zygote undergoes
Meiosis, mitosis, and cytokinesis
Cleavage, gastrulation, and organogenesis
Binary fission, budding, and fragmentation
Replication, transcription, and translation
Events in the sexual reproduction
I. Pre-fertilisation
II. Fertilisation
III. Post-fertilisation
The sequential order of their occurrence is
I→III→II
II→I→III
III→II→I
I→II→III
Strobilanthus kunthiana is also called
Neela Kuranji
Peela Kuranji
Hara Kuranji
Violet Kuranji
Select the mismatch:
Equisetum - Homosporous
Pinus - Dioecious
Cycas - Dioecious
Salvinia - Heterosporous
Where does syngamy occur in ……..
External medium
Internal medium
Both (a) and (b)
None of these
In a hypothetical plant species, the endosperm is diploid and the embryo is triploid. Which of the following most accurately describes the process leading to this unusual ploidy?
Diploid megaspore mother cell undergoes mitosis to form the embryo sac, and a diploid male gamete fuses with a haploid central cell.
Haploid megaspore mother cell undergoes meiosis to form the embryo sac, and a diploid male gamete fuses with a diploid central cell.
Triploid megaspore mother cell undergoes mitosis to form the embryo sac, and a haploid male gamete fuses with a diploid central cell.
Diploid megaspore mother cell undergoes meiosis to form the embryo sac, and two haploid male gametes fuse with a haploid central cell.
During sexual reproduction, characters are transmitted through?
Vegetative cells
gametes
propagules
clones
In frog , chromosome number is reduced to half
When 2nd polar body is separated
When 2nd polar body is divided
When 3rd polar body is separated
When 1st polar body is separated
