Answer: There are many examples of body structures that are formed in similar ways during embryonic
development and that share similar patterns of bone structure, even though they take on
different forms and perform somewhat different functions. These structures are called
homologous structures. Homo- means same, and -logous means information, so homologous
means “same information”. Homologous structures mean that the animals share a relatively
recent common ancestor.
Cell membranes help organisms maintain homeostasis by controlling what substances may enter or leave cells
The focea centralis functions to promote daytime vision, being the site of concentrated photoreceptors called cone cells.
If I help you with your question will you help me with mine?
Answer:
Option D, TT
Explanation:
As per the given situation, the cross on tall plant will give only tall offspring.
Let us take the cases one by one
a) Tt or tt
Here genotype "tt" does not represent a tall pea plant and hence, this option is incorrect
b) Tt
This genotype will produce heterogyzous tall pea plant but when the cross will be done between two pea plants having genotype "Tt" , 50% of the offsprings will have "tt" genotype, thus they will not be tall. Hence this option is incorrect
c) tt
This genotype represent short pea plant, hence this option is incorrect
d) TT
This genotype represent homozygous tall pea plant and when a cross is carried out between two homozygous tall pea plants, all the offspring plant will be tall with genotype "TT". Hence, this option is correct.