In each case where Mendel crossed true breeding plants as parents, the offspring

Question

In each case where Mendel crossed true breeding plants as parents, the offspring displayed only one of the two traits seen in the parents. This observation supports which principle of genetics? A) Segregation B) independent assortment C) dominance and recessiveness D) allele frequency E) none of the above A type of muscular dystrophy is sex linked. If a woman is a carrier for the disease, what proportion of the SON'S will have the disease. A) All B) 1/2 C) 1/4 D) 3/4 E) None of the above If a mother has type AB blood and the father has type AB, they would NOT have a child with the following blood types? A) O B) A C) B D) AB DNA can be used in all of these biotechnological aspects except A) Cloning B) Site-directed mutagenesis C) Stem cell research D) GMO production E) Fermentation

Explanation / Answer

1. B region, the region betweent the chromosome end is called as Centromere, which is darkly stained, divides the chromosomes into two halfs, important role in the cell division.

2.A Law of Seggregation, Mono hybrid cross. The only one trait is seggragated into F1 hybrids.

3 b , 50% or 1/2, if unaffacted father crossed with carrier mother, causes 1 un affected son, and other affected son, daughters are carrier and unaffected repsectively.

3 A O blood group wont possible out come,

Possibilities are A,B,AB only.

4. E fermentation. It is different in the biochemical reactions due to production of secondary metabolites due toa ssistance of micro organisms.

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