contestada

Mother Father Jane Matt
brown eyes blue eyes brown eyes brown eyes
curly hair straight hair straight hair curly hair
Jane and her brother Matt look a little bit alike. Jane made a table. She wanted to figure out how she and Matt inherited certain traits.

Based on Jane's table, what can she say about their inherited traits?
Question 1 options:

A. Jane and Matt look like their mother.


B. Only a father can pass on the color of eyes.


C. Hair type is not passed down from parent to child.


D. Jan and Matt inherited eye color from their mother.

Respuesta :

Traits are the expression of alleles combination in a genotype, and depend on the inherited alleles and the inheritance pattern. Option D. Jane can say that she and Matt inherited eye color from their mother.  

How are traits inherited?

Traits are the expression of the allelic combination in a genotype. The expressed phenotype will depend on the alleles inherited from each parent and the inheritance pattern.

According to the segregation principle, alleles separate during gamete formation. And during fertilization, two gametes from different parents merge to produce a zygote.

Each gamete carries one of the parental alleles. During fertilization occurs a combination of alleles that will express a phenotype.

Traits inheritance do not depend on each other, they are inherited by separate.

In the exposed example, eye color and hair type expression depend on the combination of the alleles in each genotype. And each trait is independently inherited from the other one.

Available data:

Mother

  • brown eyes
  • curly hair

Father

  • blue eyes
  • straight hair

Jane

  • brown eyes
  • straight hair

Matt

  • brown eyes
  • curly hair

A. Jane and Matt look like their mother ⇒ Only Matt looks like the mother because both of them have brown eyes and curly hair. Jane has brown eyes but straight hair.

B. Only a father can pass on the color of eyes ⇒ Both parents can pass the color of eyes, no only the father.

C. Hair type is not passed down from parent to childHair type is inherited from parents.

D. Jane and Matt inherited eye color from their mother ⇒ Yes, both of them inherited eye color from their mother. The three of them have brown eyes.

Based on her table, Jane can say that she and Matt inherited eye color from their mother. Option D.

You will learn more about trait inheritance at

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