In zebrafish, the parachute (pac) gene is caused by a mutation in N-cadherin. Ne
ID: 197183 • Letter: I
Question
In zebrafish, the parachute (pac) gene is caused by a mutation in N-cadherin. New alleles of this gene are have a weak phenotype as a heterozygote, and a strong lethal phenotype as a homozygote. N-cadherin over a deletion has no phenotype, that is, it is wild type. These new alleles are:
codominant.
dominant lethals.
temperature sensitive.
haploinsufficient.
incompletely dominant.
dominant negative.
a recessive lethal allele.
codominant.
dominant lethals.
temperature sensitive.
haploinsufficient.
incompletely dominant.
dominant negative.
a recessive lethal allele.
Explanation / Answer
i beloeve the correct answer to be a recessive lethal allele since it needs to be homozygote to show strong lethal phenotype.
Please comment if you feel i am wrong. thank you.