Which one of the following condition in humans is correctly matched with tis chromosomal abnormality /linkage?
Klinefelter's syndrom-44 autosomes + XXX
Colourblindness- Y-linked
Erythroblastosis foetails - X-linked
Erythroblastosis foetails - X-linked
A.
Klinefelter's syndrom-44 autosomes + XXX
Klinefelter's syndrome si represented by 44 autosome+ XXY. When an abnormal egg with XX chromosome is fertilised by a sperm carrying Y-chromosome a zygote having XXY sex chromosomes is formed. The resulting young one is an abnormal sterile male.
Study the pedigree chart of a certain family given below and select the correct conclusion which can be drawn for the character.
The female parent is heterozygous
The parents could not have a had a normal daughter for this character
The trait under study could not be colour blindness
The trait under study could not be colour blindness
Point mutation involves
insertion
change in the single base pair
duplication
duplication
The bacterium Bacillus thuringiensis is widely used in contemporary biology as a/an
Indicator of water pollution
insecticide
agent for the production of dairy products
agent for the production of dairy products
Which one of the following is commonly used in the transfer of foreign DNA into crops plants?
Trichoderma hazianum
Meloidogyne incognita
Agrobacterium tumefaciens
Agrobacterium tumefaciens
