BIOLOGY COLLEGE

The curling direction in snails is delayed a generation in its expression. The offspring of a snail are phenotypically the phenotype dictated by the genotype of the mother. Dextral curling (shell opens to the right) is dominant to sinistral curling (shell opens to the left). A cross between a homozygous sinistral female snail and a homozygous dextral male resulted in a sinistral female. If this F1 sinistral female is crossed to a homozygous sinistral male, what progeny phenotypes are expected?"

Answers

Answer 1
Answer:

Answer: and  Explanation:

coiling in snails is due to maternal effect genotype of the mother determines the phenotype of the offspring. F1 sinistral female is heterozygous let the alleles be D-dextral, d-sinistral so her genotype is Dd, so she can produce mRNA for both D and d alleles so both these mRNAs cn move into the egg, the egg can be either D or d but the egg contains mRNA of D allele so the egg hen fertilized by d sperm from homozygous sinistral male develops into dextral coiling offspring since the eggs from hich these snails developed had mRNA of allele D. so the answer is all dextral

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You have been reading for a while and want to rest your eyes and listen to the next section of your chapter. You have finish reading the assignment for the next quiz but want some extra review with flashbacks. You begin reading your E texts with blank letters against a white background but want to try changing the color mode to sepia instead. You have highlighted importing content, and added notes as you read.Now you want to compile and export these notes as a pdf study reference. You’ve highlighted important terms and ideas in your e text . Now you want to hide your highlights as you review for an exam.

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Answers

Answer:

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Explanation:

Answer:

Explanation:

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Answers

Answer:

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Explanation:

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Answers

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Answers

Answer:

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