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3 years ago

11

PLS HELP!!! 100 POINTS! PLS DO A GOOD JOB!!!!!!!!!! WRITE A LAB REPORT ABOUT Interdependence of Organisms!!!!!!!! PLS I NEED THI

S NOW! PLS HELP! READ THE LAB REPORT GUIDE PLEASE!!!

1 answer:

fredd [130]3 years ago

8 0

Answer: what did u get on it

Explanation:

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Different ratios occur in crosses with single gene pairs or two gene pairs. What types of ratios are likely to occur in crosses

likoan [24]

Answer:

Genotype ratio: 1, 1:1, 1:2:1

Phenotype ratio: 1, 3:1

Explanation:

Single gene pair cross is also known as monohybrid cross. This means that only one gene usually with two alleles is observed and it express one trait.

For example, if we name the gene for a certain trait with A, the possible genotypes are AA (dominant homozygous), aa (recessive homozygous) and Aa (heterozygous). Possible crosses are:

P: AA x AA

F1 : all of them are AA

The same is with aa x aa (all of the offspring are with aa genotype)

P: AA x Aa

F1: AA Aa AA Aa (genotype ratio 1:1) (phenotype ratio 3:1)

The same genotype ratio is in aa x Aa (offspring will have aa Aa aa Aa-(genotype ratio 1:1) (phenotype ratio 1:1)

P: Aa x Aa

F1: AA Aa Aa aa (genotype ratio 1:2:1) (phenotype ratio 3:1)

P: AA x aa

F1: Aa Aa Aa Aa (1)

5 0

3 years ago

lawyer [7]

During the S phase in the cell cycle, the chromosomes are replicated so that there are two copies. These copies are necessary so that each daughter cell created during the M phase will have an identical copy of the DNA.

Therefore, the answer is A: The DNA must be replicated.

The chromosomes joining, cell membrane expanding, and cytoplasm separating all happen during the M phase (mitosis).

4 0

3 years ago

This table shows the codons found in messenger RNA (attached). Using this information, what sequence of nucleotides in the templ

Rashid [163]

Answer:

A

Explanation:

The correct answer would be <u>option A</u> - GUA-CAU-ACC

<em>Looking at the table of codons, for the amino acid Val, the first base (which is on the 1st column in the 6th row) is G while the second base (2nd column, 2nd row) is U. The third column can be any of U, C, A, or G (6th column, 4th row). Hence, GUA is plausible</em>

<em>For the amino acid His, the first base is C (1st column, 2nd row), the second is A (4th column, 4th row) while the last could be any of the 4 bases. Hence, CAU is plausible.</em>

<em>For the amino acid Thr, the first base is A (first column, 5th row), the second is C (3rd column, 2nd row) while the 3rth could be any of the 4 nucleotide bases. Hence, ACC is plausible.</em>

Therefore, the correct sequence of nucleotides for Val-His_Thr would be GUA-CAU-ACC

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3 years ago

In the "Little Albert" study, the fear-producing stimulus used as an unconditioned stimulus was the:_________a. White rat b. Fea

inn [45]

Answer:

c. Loud noise

Explanation:

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3 years ago

What is a disease caused by chronic malnutrition in childhood in which a protein deficiency makes the child more vulnerable to o

scoray [572]

Kwashiorkor, i believe.

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3 years ago