NEET BIOLOGY

GENETICS AND EVOLUTION

GENETIC BASIS OF INHERITANCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Albino rabbits are rabbits that don’t have any pigmentation in their fur or eyes. Their eyes appear pink and their fur appears pure white. The gene for albinism is a recessive gene. If an albino rabbit (bb) breeds with a brown rabbit (Bb), what is the percent chance that they will produce a brown rabbit?
A
25%
B
50%
C
75%
D
100%
Explanation: 

Detailed explanation-1: -Autosomal recessive inheritance This means a child has to get 2 copies of the gene that causes albinism (1 from each parent) to have the condition. If both parents carry the gene, there’s a 1 in 4 chance that their child will have albinism and a 1 in 2 chance that their child will be a carrier.

Detailed explanation-2: -Rather, epistasis occurs in all of the following scenarios: Whenever two or more loci interact to create new phenotypes. Whenever an allele at one locus masks the effects of alleles at one or more other loci.

Detailed explanation-3: -The different types of genotypes are-homozygous recessive (pp), homozygous dominant (PP), and heterozygous (Pp). The homozygous dominant and the heterozygous genotypes show the same phenotypes.

Detailed explanation-4: -The trait that is present in gene level but masked and does not show itself in an organism is called a recessive trait.

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