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lbvjy [14]
3 years ago
5

The haploid cells of a yak contain 30 chromosomes. How many chromosomes are in a yak's diploid cells? Choose 1 answer: Choose 1

answer: (Choice A) A 60 (Choice B) B 15 (Choice C) C 30 (Choice D) D 90
Biology
2 answers:
Nadusha1986 [10]3 years ago
6 0

Haploid cells contain half the amount of the diploid cells, therefore the diploid cell will contain twice the number of chromosome in the haploid cell. 2x30=60 chromosomes (choice A)

alisha [4.7K]3 years ago
6 0

Answer: A - 60

Explanation: Diploid cells contain twice the number of chromosomes of haploid cells. Hope this helps have a nice day. :)

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4 years ago
Achondroplasia is a form of dwarfism inherited as a completely dominant trait. Two achondroplastic dwarfs have a dwarf child; la
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There's 25% probability that their next child will be normal, and 75% of it being a dwarf.

Explanation:

Achondroplasia (A) is a dominant trait.

Two achondroplastic dwarfs (A_ x A_) have a dwarf child (A_) and a normal child (aa). The second child must be aa because if it had a dominant allele it would also be dwarf.

The only way for two achondroplastic parents to have a normal child is that <u>they are both heterozygous (Aa) for this gene.</u>

The cross Aa x Aa would produce the following offspring probabilities:

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So there's 1/4=25% probability that their next child will be normal, and 3/4=75% of it being a dwarf.

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Around 90-92. I hope this helps~

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