STD 11 - 18. Neural control and coordination — NEET STD 11 Science — Question

It is still a favorite idea for some astronomers.

Which one of the following statement are correct.
(i) Mendel's experiments had small sample size which gave greater credibility to the data.
(ii) A true breeding line shows a stable trait inheritance and expression for several generations.
(iii) A recessive parental trait is expressed only in its heterozygous condition.
(iv) Failure of segregation of chromatids during cell division results in aneuploidy.
(v) Chromosomal disorders are mainly determined by alteration or mutation in a single gene.
(vi) Thalasemia and cystic fibrosis are Mendelian disorders.
(vii) Sickle cell anemia is an X-linked trait.
(viii) Incomplete or mosaic inheritance is an example of pre-Mendelian concept of blending inheritance.
(ix) Test cross is a special type of back cross.
(x) Chromosomal aberrations are commonly observed in cancer cells.

Crossing over is

'Sea hare' is

In Hydra, neural organization is comprises of

Abiogenetic theory of origin states

Which is not an example of tissue

Which of the following cells are associated with immune system of body