O que são genes letais?

Genes Lethais e Alelos Recessivos

Interactive Video
•
Biology, Science
•
9th - 12th Grade
•
Hard

Ethan Morris
FREE Resource
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6 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Genes que não têm efeito no organismo
Genes que determinam a morte do portador
Genes que causam doenças leves
Genes que aumentam a expectativa de vida
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Como os alelos letais recessivos se expressam?
Apenas em homozigose
Sempre que presentes
Em dose simples
Somente em heterozigose
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Quando os alelos letais foram descobertos?
Em 1804
Em 1904
Em 1954
Em 2004
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual é o resultado do cruzamento de camundongos de pelagem amarela?
Todos os descendentes são amarelos
Um amarelo e dois cinzas
Dois amarelos e um cinza
Todos os descendentes são cinzas
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Qual condição humana é um exemplo de letalidade causada por um alelo?
Diabetes
Acondroplasia
Hipertensão
Miopia
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
O que acontece com indivíduos com acondroplasia em homozigose?
Vivem uma vida normal
Têm uma expectativa de vida aumentada
Não apresentam sintomas
Desenvolvem deformidades ósseas
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