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Vladimir [108]
3 years ago
12

Distinguish between a Longitudinal study and Cross-sectional study in biostatistics​

Biology
1 answer:
nydimaria [60]3 years ago
7 0

Answer:

missing - biostatics

Explanation:

Longitudinal studies differ from one-off, or cross-sectional, studies. The main difference is that cross-sectional studies interview a fresh sample of people each time they are carried out, whereas longitudinal studies follow the same sample of people over time.

hope this helps :)

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Why does each parent contribute only one allele to the offspring?
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Answer:

Because the gametes implemented in fertilisation are haploid in nature, in the case of humans, mature gametes contain 23 chromosomes instead of 46 which will then combine with another parents' 23 chromosomes during fertilisation, i.e: 23 (dad) + 23 (mom) = 46 (zygote)

Explanation:

A regular somatic cell has 46 chromosomes, 2n, 2 alleles but the gametes have 23 chromomes, n, 1 allele. The usual significance of this is so that there is diversity in the offspring and the offspring can gain characteristics (bad or good) from both parents.

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defon
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6 0
3 years ago
Over time, three types of cells derived from this single-celled animal have emerged with specialized functions and they interact
Deffense [45]

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