Gymnosperms produce male and female cones while angiosperms produce stamens and pistil in the same flower as the male and female reproductive parts. ... In angiosperms, pollen grain is transferred from the anther to the pistil by wind, insects oranimals by the attraction to flowers.
C. Target cells have the specific receptors that hormone
About 60% of natural conceptions fail to implant properly. One of the reasons may be the failure of the embryo to generate Trypsin, a chemical which induces a receptive environment in the uterus in order for the fetus to be implanted. The excess or lack of chromosomes of the fertilized egg may also be a factor in implantation failure. A weak immune system of the woman may also be an important factor.
Answer:
your noes and lungs
Explanation:
your lungs help you breath and the smell goes through your noes
Answer:
siguen normas estadísticas sencillas, resumidas en sus dos principios. Conocida también como la primera Ley de Mendel, de la segregación equitativa o disyunción de los alelos.
Explanation:
la herencia se transmite por elementos particulados (refutando, por tanto, la herencia de las mezclas)