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weeeeeb [17]
3 years ago
12

If two people who are both heterozygous for the trait of a bent pinky finger have a child, what are the possible genotypes and p

henotypes?

Biology
2 answers:
Vladimir [108]3 years ago
7 0

genotypes is 1:2:1 & phenotypes is 3:1

l hope this helps you

Arada [10]3 years ago
3 0

Answer:

When two people heterozygous for the trait of a bent pinky finger have a child, the possible genotypes CC, Cc and cc -in a ratio of 1:2:1- being the phenotypes bent pinkies: straight pinkies in a ratio of 3:1.

Explanation:

Bent pinky finger is due to a condition called <u>Camptodactyly</u>, characterized by sustained bending of a finger due to a deformity in an interphalangeal joint. Pinky finger camptodactyly is a trait that is inherited in an autosomal dominant pattern.

  • With camptodactyly (bent pinky finger) C
  • Without camptodacilia (straight pinky finger) c

The parental generation is made up of two heterozygous individuals with bent pinky fingers:

♂ Cc

♀ Cc

The offspring of this hybrid cross, according to Mendelian heritage, can be seen in this Punnett Square:

<em>Alleles       C     c </em>

<em>C             CC   Cc </em>

<em>c             Cc    cc </em>

According to this the offspring will have:

<u>Genotypes</u>:

CC: 25%

Cc: 50%.

cc: 25%

<u>Phenotypes</u>:

Bent pinky finger: 75%

Straight pinky finger: 25%

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