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TLS Online TPP Program

#Question id: 5560

In a newly fertilized egg, the vitelline layer ________.

#5. Developmental Biology

  1. lifts away from the egg and hardens to form a fertilization envelope

  2. secretes hormones that enhance steroidogenesis by the ovary

  3. reduces the loss of water from the egg and prevents desiccation

  4. provides most of the nutrients used by the zygote

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TLS Online TPP Program

#Question id: 4755

#8. Inheritance Biology

When two albino snails were crossed, all of the F1 were pigmented. All F1 intercross would results
TLS Online TPP Program

#Question id: 4758

#8. Inheritance Biology

The allele l in human population is recessive lethal and x chromosome linked. If a female is heterozygous for l allele marries with normal male. What will be interpretation correct?
TLS Online TPP Program

#Question id: 4759

#8. Inheritance Biology

which of the following is not a mechanism for sex determination?
TLS Online TPP Program

#Question id: 4761

#8. Inheritance Biology

which of the following statements about a lethal allele is not correct?
TLS Online TPP Program

#Question id: 4762

#8. Inheritance Biology

a semilethal allele is an example of which of the following extensions of mendelian genetics?
TLS Online TPP Program

#Question id: 4764

#8. Inheritance Biology

Which of the following is the best example of overdominance?