How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with contrasting tralts$?$
$8$
$4$
$2$
$14$
When a cross is made between offspring and its parents, it is known as
Lesch Nyhan disease is an $X-$linked recessive disorder that causes neurological damage in human beings. $A$ survey of $500$ mates from a caucasion population revealed that $20$ were effected with this disorder. What is the frequency of the normal allele in this population?
Genes exhibiting multiple effects are known as
Knowing that albinism is determined by a recessive gene in man; presence of albinism in children born to a couple proves that
‘Eugenics’ pertains to
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